His wife, Xu Yan, told The Associated Press that their son ran back home after seeing a van, a SWAT car and two police cruisers, and burst into their apartment saying, "Mom, the police took Dad away!"
"I don't know anything. We don't know the charges, or who took him, or which department has him right now, as the police haven't given us any information," Xu said.
Yu's seizure today took place a day after he posted a letter online calling on the ruling Communist Party to reform the Chinese Constitution and allow open presidential elections.
"The president, the head of state, is basically appointed without any meaningful election. It has no credibility for the country, for civil society and for countries across the world," Yu said in the letter.
"Though the contents were protected by constitutional rights to free speech, putting this kind of thing online right now in China is not allowed," Xu said.
Friday marked the conclusion of a Communist Party plenary session that moved to insert a reference into the constitution on the importance of party leader and President Xi Jinping's pet political theory.
Xu said she went to the local police station and case information center on Friday evening, but was told that her husband wasn't there.
A police officer reached by phone at the Xingucheng neighbourhood police station, who would only give his surname, Chen, said he had "no idea" about the case. Chen added that even if there was a case involving Yu, he would not be allowed to comment.
"The authorities already know that a lot of people are watching, but they went ahead and detained him," Xu said. "They did it, even expecting the attention they'd get.
Disclaimer: No Business Standard Journalist was involved in creation of this content
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