Chinese Researcher Arrested By FBI In San Francisco For Visa Fraud

The transcript discusses the arrest of Tong Ren, a Chinese biology researcher, by the FBI for allegedly lying on visa applications and hiding her ties to China's People's Liberation Army. The investigation revealed her involvement with the Chinese military. This incident is part of ongoing tensions between the US and China, highlighted by the closure of consulates in Houston and Chengdu as diplomatic retaliations.

What evidence did the FBI find that linked the researcher to the Chinese military?

How did the conflict between the US and China escalate recently?