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Cheung said the testing program is aimed at screening asymptomatic patients and cutting the transmission chains of the virus as soon as possible.

Chen also helps to pack the harvest, draw up contracts, naturally, and match up orders with invoices to make sure the sales process of the pomelos on e-commerce platforms go through without a hitch.

Chen Zunde, general manager of Guangdong Fund Investment Co Ltd and a veteran investor in US-listed shares, said investors are expected to stick with the case-by-case mindset when considering the value of Chinese firms.

Cheng also mentioned further development in the use of intelligent networks so far, as well as their use for domestic OEMs and universities. The technology has received positive response, Cheng said.

Chen Rendian was back at school after donating bone marrow to an 8-year-old girl who was struggling with leukaemia. The donation saved her life.