With a length of 6.8 kilometers and a width of 46 meters

the two-way eight-lane tunnel will be the largest and widest in the worl

d upon completion. Its tunnel will be 1.2 meters longer and two lanes wider than the HZMB.

Yang said the immersed tunnel used the steel shell tube, the first of its kind in China, and there were many other new struct

ures and technologies, which brought lots of challenges, such as lack of technical standards in the country.

He said the tunnel will have 32 tubes and each tube will have about 10,000 tons of steel, 165 met

ers long and with a displacement of about 80,000 tons. Each tube has more than 2,500 separate chambers.

After tubes are built in factory, they are floated to th

e construction site, and the most difficult process is to sink and connect, Yan

g said. His company has invited experts to deliberate in rounds on the cement pouring, sealing and connection.

The Shenzhen-Zhongshan Bridge is another important infrastructure project of the country’s 13th Five-Year Plan (2016-2020).

The construction started on Dec 29, 2016. It is expected to put into operation in 2024.

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Since 2015, more than 100 foreign experts and students

 from countries involved in the BRI have visited Hainan annually to study agricultural technology, including Nanf

an’s breeding program, which is “playing the role of Silicon Valley for the country’s seed industry”, Wang said.

Hainan’s climate and biological resources have made Nanfan an important nation

al center of seed propagation. Every winter, more than 7,000 domestic agricultural scientists and

workers are busy at the Nanfan centers. More than 70 percent of the country’s 7,000 crop varieties have been culti

vated in the tropical island province, which is building a global resources center, National Business Daily reported.

“With good stress resistance and higher yields, hybrid rice seeds developed by Nanfan’s ce

nters are being welcomed in Southeast Asian countries,” said Xie Zhenyu, an assistant research fellow at th

e Research Institute of Tropical Crop Germ Plasm under the Chinese Academy of Tropical Agricultural Sciences.

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hina to improve transport efficiency, reduce logistics costs

China will unveil various measures to improve transport efficiency and lower logistics costs, according to a spokesperson for the transport ministry.

Vowing to see a notable increase in transport efficiency in the next

three years, the country will accelerate the construction of a comprehensive tra

nsport network, spokesperson Wu Chungeng told a news conference on March 28.

Efforts will also be made to expand the electronic toll collection system and promote multimodal transport, Wu said.

Meanwhile, the logistics costs are expected to be reduced by 120.9 billion yuan (about $17.97 bil

lion) in 2019, and a logistics service system in line with the country’s high-quality growth will be established over the next three years.

To fulfill such targets, the ministry will optimize transport struct

ure, upgrade rail, road and waterway transport systems and expand the network of logistics hubs, Wu said.

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Considering that the aircraft faces uncertainties in its airwo

irworthiness, after looking into the matter, the administration decided to suspend Boe

ing 737 MAX 8 airworthiness certifications immediately,” the Civil Aviation Administration of China said in a sta

tement unveiled on Tuesday, adding that the ongoing investigation had not ruled out design flaws in the aircraft.

“A certificate is granted by the country’s regulator after an aircraft has been inspected and

meets the requirements for safe operation,” said Li Xiaojin, a professor of aviation economics at Civil Aviatio

n University in Tianjin, “It’s a long process to determine whether an aircraft is airworthy.”

It took Boeing 15 months to get an airworthiness certificate for the first 737 MAX 8 from the a

dministration, he said, adding that the certificate was issued in October 2017.

The administration has sent experts to participate in investigations and will rev

iew the model’s airworthiness with a focus on alterations to the jet engine design and pla

cement. It will resume accepting applications for the certificate after the aircraft design is found to meet the requirements.

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Considering that the two accidents took place after ne

 Boeing 737 MAX 8s were delivered, and went down just minutes after taking off, within five months of each other, they have some degre

e of similarity,” the administration said in its statement. The administration grounded all Chinese Boeing 737 MAX 8 jets on March 11.

“With China suspending the airworthiness certificate for the Boeing 737 MAX 8, domesti

c airlines are unable to purchase this model,” Li said, adding that it will undoubtedly cause great economic losses to Boeing.

As of the end of January, the Boeing 737 MAX family had 5,011 orders worldwide, of which 3

50 had been delivered. More than 420 orders came from China, with 96 already in commercial operation.

The future of the commercial aviation market in China is very exciting, Li said, and no othe

r country has more demand for aircraft. But safety questions are hindering Boeing, Li said.

A Southwest Airlines Boeing 737 MAX 8 heading to the California desert for parking during a global ban of the aircraft m

ade an emergency landing on Tuesday due to an engine-related problem shortly after takeoff, according to the carrier.

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hina urges UK to stop interfering in Hong Kong’s affairs

China on Thursday urged the United Kingdom to respect China’s sovereignty and stop interfering in Hong Kong’s affairs.

Foreign Ministry spokesperson Geng Shuang made the remarks after the UK government released its latest six-monthly report on Hong Kong.

“We urge the UK to face the reality that Hong Kong has returned to China for 22 years, respect China’s s

overeignty, stop releasing relevant reports, and stop interfering in Hong Kong’s affairs,” Geng said at a press briefing.

It is undeniable that the “one country, two systems” practice has achieved widely-acknowledged success, he said.

“Hong Kong’s affairs have been entirely China’s internal affairs since

July 1, 1997. The British side has no right to make irresponsible remarks or interfere with any excuses,” Geng said.

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Harmful gas found near Xiangshui blast siteing after the massiv

Environmental monitoring has detected an excessive amount of the harmful gas benzene ne

ar the site of a deadly explosion in Xiangshui county of Jiangsu province, authorities said on Thursday.

At 10 am on Wednesday, the benzene density stood at 2.04 milligrams per cubic meter at a monitoring point that is 1 kilometer away in the downwind direc

tion from the site, about 17.5 times more than the national standard. The concentration was below the standard, how

ever, 2 and 3.5 kilometers away, according to a media release from the Jiangsu environmental watchdog.

“Analysis done by environmental experts working on the site shows that the excessive den

sity of benzene occurred because buried pollutants were gradually exposed to the air as cleaning work cont

inues on the site,” Liu Youbin, spokesman of the Ministry of Ecology and Environment, told a news conference on Thursday.

The explosion occurred at about 2:48 pm on March 21 after a fire broke out in a plant owned by Jiang

su Tianjiayi Chemical Co. So far, the blast has claimed the lives of 78 people and injured more than 600 people.

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Liu, the spokesman, said the ministry dispatched a team co

nsisting of 49 experts from institutes affiliated with the ministry and universities

, including Tsinghua University, to the site to help with the environmental aftermath from the explosion.

He also said the team has cut off the access of three rivers to Guanhe River, which empties into the sea, to prevent the pollution from spreading.

The three rivers inside the chemical industry park wer

e found contaminated soon after the blast. On Wednesday, an excessive amount of pollutants was still de

tected in two water bodies in the chemical park — the Xinfeng River and Xinnong River.

According to the Jiangsu environmental watchdog, the density of ammonia nitrogen in Xinfeng River reached 183 millig

rams per liter, 90.5 times higher than the national standard, at 10 am on Wednesday. The content of methylene chlor

ide in the river was about 15 times above the national standard with a density of 0.321 mg/L. The ch

emical oxygen demand in the water body stood at 343 mg/L, 7.6 times above the national standard, the watchdog said.

The watchdog also found an excessive amount of these pollutants in Xinnong River, though with much lower densities.

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The examination was designed to check and hone the general

capabilities in organizing training and commanding their troops. The results will be taken into consideration

when it comes to promotion or commendation, the statement said. It added that the Ground Force wanted to use this exami

nation to strengthen the notion that commanding officers must take the lead in combat readiness training.

Lu Chuangang, assistant to the Ground Force’s chief of staff, said the examination

‘s content included theory, strategy and command skills. Participants were given different tasks in diffe

rent areas, and were told to analyze their respective situations, determine goals, make plans for troop deployment and d

evelop combat schedules, according to Zhou Bingyi, director of the operations bureau of the Ground Force’s staff department.

Zhou said participants had already taken part in tests on firearm usage and physical strength hosted by their own units before the examination.

“The capabilities of these commanding officers determine wheth

er their troops will be well trained,” Zhou said. “We hope such examinations will help impro

ve the competence of commanders and consequently boost the combat capabilities and preparedness of

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Former vice-minister of public security expelled from Party

Taking a step requires just one second for a typical person. But not for Gao Ziren, whose paral

yzed left leg requires him to first move a crutch forward before his leg, and then balance himself.

For 42 years, Gao, a teacher at Lixin village primary school in a mountainous area of East China’s Jiangxi province, has walked th

is way between his home, the school and his students’ homes. Over the course of his career, he has worn out more than 60 crutches.

Gao, 60, was born in a mountainous area of Meiling township, Wanli district of Nancha

ng. After coming down with polio at the age of 1, his left leg suffered muscular atrophy, which left him unable to walk normally.

He did not give up, relying instead on his mental strength to finish his studies from primary school through high school.

He started his career in 1977 when a village official visited him about being a teacher in the village, as one of the two teachers the

re had left. Gao agreed to take the position, as he knew the importance of a teacher to students, especially those like him.

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