Hang up the phone, Tang Yu is holding a colored envelope.

The envelope is pink with many heart-shaped patterns on it. Each envelope is different. So it can be seen that the sender's use of envelopes is also quite exquisite.

And according to the three letters, Tang Yu has found a rule that he sends one letter every week, which arrives on Monday.

Tang Yu looked at the envelope, but it was still his home address. He shook his head and opened the envelope. This time, it was a colour letterhead and the colour-printed handwriting: Do you really want to know who I am? Haha, I won't tell you!

"Silly!"...