S1, E6: Li Yuan, a lady dressed in black, pays Renjie a visit. It turns out that she was forced to be the Watcher for CODE after making her wish to save the life of her terminally ill son. Her job was to monitor all the players to ensure that they could complete their missions in a timely manner. As her true identity was exposed, she was kicked out of the CODE game. Therefore, she’s getting in contact with Renjie to seek assistance in uncovering the truth and protecting her child. Li Yuan reveals that CODE knows how to manipulate people. It exploits the vulnerabilities of people to lure them. It promises that they will be shielded from harm as long as they follow the APP’s orders. Once they resist, CODE controls their destiny and can condemn them to death.