Why can't I use the skills in the first chapter of shushan?

We're out of blue, bug Shushan: Chapter 1 is a domestic online game "Shushan: Chapter 1" issued by Jilin Audio-visual Publishing House Co., Ltd. and operated by Chengdu Yimoxuan Network Technology Co., Ltd. Because the world team can't recover the blue amount with a light blue bug, it can't use skills.