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"By comparison, in 2016, the total number of births in the district was about 2,000. Many couples who already had one child delayed having a second until the universal second-child policy was implemented," he added.

"China is already our largest customer when it comes to natural gas, and with the economy taking greater strides and tremendous growth seen in petrochemicals, Shell will continue having a strong focus on investing in petrochemical manufacturing inside the country," he said.

"China continues to create an open, fair, just and non-discriminatory business environment, offering more opportunities to the world, thus helping stabilize the unsettled global economy amid the COVID-19 pandemic. This is a key factor for global companies to find the Chinese market attractive," said Quan Heng, secretary of the leading Party members' group at Shanghai Federation of Social Science Associations.

"By far it is the earliest fossil crayfish found in the world," said Shen, who has scrutinized and researched hundreds of fossil crayfish unearthed in Liaoning province, together with his colleagues.

"But the most challenging situation is yet to come, probably in May and June, when there is a time lag of about one to two months from receiving an order to delivery," said Pan, 42, who is based in Ningbo, Zhejiang province. Zhejiang is one of the country's major centers of foreign trade.