Wen Qian followed his father’s instructions to Chengdu to collect a mother’s living collection, whichhappened to meet Bai Jiran at Wenshuyuan unexpectedly. Wen Qian’s luggage was stolen. I remembered my dad’s call on the phone and gave up the alarm because he had no money and no cell phone. He could only ask Bai Jiran for help. Wen Qian, who is inherently insensitive to numbers, only memorized Xu Anran’s mobile phone number, which was one number away from her, and contacted Wen Lin through the email sent by Xu Anran. Bai Jiran looked at the selfies left in the album after borrowing Wen Qian ’s mobile phone and fell into childhood memories. The scene of Wenshuyuan made him determine that Wen Qian was the little girl he met at the Wen family before leaving the UK at the age of seven.