Emperor Wen of Sui
It is not known when Xiao Cong was created crown prince, but it must be before 583, when Emperor Ming sent him, as Western Liang's crown prince, to congratulate his suzerain Emperor Wen of Sui on moving his capital from the old city Chang'an to the nearby new capital of Daxing (大興). In 585, Emperor Ming died, and Xiao Cong succeeded to the throne (as Emperor Jing).