Substitute for a Rich Family: I Became Mr. Lu's Pet

Rumor has it that the eldest son of the Lu family has disabled legs and is not going to die soon. To marry him is to jump into a pit of fire and never recover! Her sister threatened to die, and her parents forced her to do so in cold blood. She once again became a tool for her sister to satisfy her selfish desires. She thought she would fall into the abyss after getting married and her life would be ruined, but she didn't expect that she would be doted on!