Who is the magical power of Xia Zi recorded in the Jianghu?

Xia Zi's magical power in Jianghu Fengyunlu is equivalent to a Dharma Heart Sutra with nearly double blood return, which is suitable for people with high blood volume. This skill is similar to the effect of doubling health. If it is used by attacking characters such as swordsman, it will not be able to play an advantage.