Old Tan's only grandson, a military doctor known as the smiling tiger in his company. He was once a comrade-in-arms with Xie Zhenting and fought alongside him on the battlefield. He resigned from his post and retired after being told to keep a low profile. He took away hidden life-saving medicine before Xie Zhenting left for a special mission, which may have contributed to Xie Zhenting's serious injuries. He begged his grandparents to let him stay and take care of Xie Zhenting.
