When he finally got a day off on Wednesday and had time to visit the Chinese embassy in central Singapore from his home in Kovan, on the northeastern side of the island, Chinese national Chen Ming only wanted to know one thing: how could he get tested for the coronavirus?He told This Week in Asia that he had tickets to fly to Guangzhou on September 6 with low-cost carrier Scoot, but had yet to receive any information about where he could get tested for Covid-19 – a new requirement for…