A Chinese state television employee posted photos of missing tennis star Peng Shuai online in a new effort to allay concerns about his disappearance after accusing a senior executive of sexual assault. The photos appeared on Twitter on Friday, which cannot be seen by most Internet users in China. State TV employee Shen Shiwei wrote that they were on Peng’s account on WeChat messaging service with the comment “Happy Weekend”. The ruling Communist Party is facing growing appeals from tennis stars and the professional sports tour to prove that Peng, a three-time Olympian and former No.1-ranked women’s doubles player, is…