Heavenly Dragon Doctor Son-in-Law

Qin Long was unexpectedly attacked and became senseless for three years, yet Tang Xuewu never left his side. Three years later, Qin Long awoke, determined to repay kindness and to avenge grievances. He would repay Tang Xuewu for her unwavering loyalty. He would avenge the treacherous attack from that year. — Description from novelcodex.org