Zhang Kaitai, formerly known as Zhang Jiayi, is a Chinese actor and graduate of the Performance Department at the Shanghai Theatre Academy. He made his acting debut in 2016 with a minor role in the TV series Oh My General. Zhang Kaitai, formerly known as Zhang Jiayi, is a Chinese actor and graduate of the Performance Department at the Shanghai Theatre Academy. He made his acting debut in 2016 with a minor role in the TV series Oh My General.