Cool Dream Pavilion Remembers the Stars

In the first life, he created the Xia Meng Mo Yuan, which spread across the world, for her sake. After rebirth, as her guardian, he still protected her with his life. Upon learning that she had someone she liked, he continued to love her silently from behind. In the end, he traded his life for her to be with the one she loved. Yet even so, he had no regrets, for he knew her happiness was his sole purpose... — Description from novelcodex.org