The five-hour long U.S. congressional TikTok hearing drew ridicule and criticism from the U.S. netizens, saying Congress did not give TikTok CEO Shou Zi Chew a fair chance to speak. Without evidence, U.S. lawmakers have accused TikTok of data security issues and connections to the Chinese government. Why were these lawmakers being so rude? Why is a short video app making them go into a frenzy? In this episode of BizBeat, CGTN's Wang Tianyu explains.