My childhood friend, on his wedding day, received a red envelope. Ten thousand yuan. No signature. The red envelope only had one word written on it: "Return."

He held the red envelope, flipping through it all day. Couldn't find out who sent it.
After the wedding banquet ended at night, he sat on the sofa and took out the money from the red envelope. All new bills. Consecutive serial numbers. Ten thousand yuan.
He thought of someone.
Three years ago, he lent a friend ten thousand yuan. At that time, he hadn't met the bride yet.
The friend said it was for startup capital, to be repaid in three months. He lent it.
Three months later, the friend disappeared.
Phone disconnected, account canceled, the company's registered address was a fake address.
He reported it to the police. No case was filed.
The amount was too small.
He put that ten thousand yuan red envelope into the safe.
Next to it, he left a note: "No need to return it anymore. But I want to know, what are you doing now."
Last year, he moved house.
The safe was opened. The red envelope was still there. The note was still there.
He also left a new note.
"My wife asked me whose ten thousand yuan this is. I said it was paid back by a friend."
She said, "Then invite him to dinner."
I said, "He won't come."
He closed the safe. I don't know if he ever invited him afterward.