Chang knew Yi Xuan during the “Deadly evolution” period. He was one of the chiefs who was responsible for the captain’s meals, and during this special period, he became one of the leaders of the commissariat department.
It was quite a coincidence for Chang to meet Yi Xuan; when Chang and his friends were cooking the snake in the kitchen a few days ago, Yi Xuan happened to drop by the kitchen. And because they had different reasons of coming to the kitchen, they only had a quick chat. On the same day, they decided on an agreement of exchanging food – Chang exchanged the excess snake meat for 15 pieces of hardtack.