Foster Father

Roast duck chef Lou Zhi Jun is the foster father of 3 children he adopted under various circumstances over the past 16 years and raised single-handedly with great hardship and personal sacrifice. These children are now 17-year-old Xiao Yu, 13-year-old Xiao Xin, and 6-year-old Xiao Wan, all of whom are very obedient and filial. Even though they're not related by blood, they care greatly for and profoundly love one another. Tragedy befalls when Lou Zhi Jun is diagnosed with an incurable hereditary neurological disorder which would eventually lead to loss of control of all bodily functions. In the face of his own health crisis, Lou Zhi Jun's main concern is for the future of his children, thus he decides to help them find their biological parents before he dies.
(Source: DramaWiki)