Can You Write Another Letter to Me?

She is a psychiatrist, but she cannot cure her own heart disease - there is always a voice in her dreams asking: "Can you cut off the other side of my heart?" She looked through ancient books and found that this was the final letter written by a general to his wife thousands of years ago. When his wife received the letter, the general had died in the battlefield. She went to burn a letter in front of the general's tomb, and that night she dreamed that her wife said to her: "I am waiting for him, and you are letting go." After waking up, she finally no longer had insomnia. It turns out that the heart disease was buried long before she was born.