Derek Chang, who also is known as Derek Zhang and Zhang Xuan Rui, is a Taiwanese actor. Born on December 17, 1992, he made his acting debut in the 2015 television drama “Be With You” and then went on to appear in “Prince of Wolf” (2016) and “Stay With Me” (2016-2017), “The Man From the Future” (2017) and “My Dear Boy” (2017-2018). (Source: Viki) Watch drama online for free.