Zhang Zheng Xi, in particular, is the most serious, quiet and unflappable.He looks very persistent and frightening, given his constant expression of indifferent, impassive face. Although outwardly he looks very severe, in fact he is very kind and caring; He often tries to see the good in people.He has dark brown hair, grayish-blue eyes, is gay and has dark eyebrows. He is very fit and muscular.He has a younger sister and lives with both his mother and father.