There Is Only Lingyuan in My Body, I Can Only Use It as Internal Force

"Chang Xingshu, you are running here again." "Yes, I found that running is good for Lingyuan's exercise. If I want to be a graduate student in the future, I will choose this as the theme." "It's useless if you only have a spiritual abyss and no spiritual control." "Alas, I have spiritual abyss in my body, but I still can't use it. It's like I have no inner strength but no martial arts." "What is internal force?" "Internal strength is..." "Inner power?" "Inner power!"