This is the reason why the Jianghu Silver Order can't be used.

Certain conditions need to be met. According to the official website information of This is the Jianghu, Yin Ling is used to increase the maximum experience value by 12 times in this game, and can only be used after completing a certain number of tasks. This is Jianghu, a high-freedom martial arts RPG independent online game developed by Hangzhou Blue Whale Network Technology Co., Ltd. and issued and operated by Hangzhou Simi Technology Co., Ltd.