He said the system was connected to the police database. The number of people in the audience could be calculated, and identities could be determined by making comparisons.
He says that the university has been looking after the faculty members. "They brought us food. They told us to take our temperature every day and send it to the school," he says.
He stressed that Hong Kong is a special administrative region of China, and the qualification of Hong Kong SAR Legislative Council members is purely an internal affair and no foreign country is permitted to make irresponsible remarks on this or intervene in it.
He urged the United States to uphold the one-China policy and the three joint communiques between China and the US.
He said the Chinese consulate in Los Angeles is doing a good job of protecting Chinese students by "working very closely with Chinese student bodies to make sure everybody stays safe" and by sharing its emergency contact numbers.
He underscored the importance of information technology to the country and people, and called for propelling the development of cloud computing, big data, artificial intelligence and the industrial internet in a bid to advance the building of a digital China and a smart society.
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He said that while the US continued to accuse Russia of interference in the last US presidential election, it also tried to link the protests in the US with China without any proof.
He said the company had applied for a permit from the urban management authorities in Wuhan's Hongshan district before launching the service.
He said: "Traditionally, and under international law and custom, national security legislative frameworks are at the heart of every state and are reserved matters for national sovereignty.
He stressed that artificial intelligence flags about 90 percent of "hate speech" for removal, but didn't define the term or cite examples.