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"Demand remains high for them in China compared to other types, as people prefer to use them to buy subway tickets or stamps at vending machines," said Cao Zhanlu, a manager at the Shanghai Mint.

"Digitalization is important when next-generation information technologies such as cloud computing, big data, artificial intelligence, and blockchain are developing rapidly in China," she said.

"Despite the current situation, STEAM education is going to bring a revolution to the industry. Deep integration of education and technology will definitely be the trend."

"Exposing jaywalkers is one way to manage traffic, and our aim is to further reduce the number of traffic accidents caused by jaywalkers," Li said.

"DNA comparison is the best way to find missing family," an unnamed police officer specializing in child trafficking from Sichuan told livestreaming reporters at the Chengdu airport. "Some 622 children in Sichuan have succeeded in finding their natural family since the country launched the DNA database for missing children."