Chelsea have been big movers this summer to give Frank Lampard a squad to challenge for the title.
"I'm 23 years old. I don't think it's my last chance. I do believe that I will be a Grand Slam champion at some point," he added. Enditem
Despite having the majority of the ball, Zall failed to make an impact as Cote d'Ivoire striker Jean Evrard Kouassi and Dong both squandered chances to level the game.
Yu, 25, has agreed a one-year contract with Xinjiang, with the option of a one-year extension.
Evergrande doubled the lead in the 69th minute with a stunning free kick from Ai, two minutes after his tap-in was ruled out due to off-side.
He played for Maccabi Tel Aviv, Dinamo Zagreb, Krylya Sovetov Samara and other teams in Europe.
Marcos Alves broke the deadlock for Hebei in the 15th minute through a header after receiving Yin Hongbo's long pass.
Wang Shenchao (R) of Shanghai SIPG vies with Gao Xiang of Qingdao Huanghai during the 10th round match between Shanghai SIPG and Qingdao Huanghai at the postponed 2020 season Chinese Football Association Super League (CSL) Suzhou Division in Suzhou, east China's Jiangsu Province, Sept. 10, 2020. (Xinhua/Yang Lei)
Thiem was runner-up at the Australian Open earlier this year and also lost in the French Open finals in 2018 and 2019.
Leo played the Africa Cup of Nations in 2015, representing Cameroon. In his career, he had 12 appearances for the 'Lion of Africa'.
Teda's Liu Ruofan had the ball into the net in the 62nd minute but it was wiped out as Liu had fouled in the build-up.