C454 A Hidden Figure in the Lee Family

"But how am I supposed to practice this?"

Tang Yu asked. It was easy to understand, but it was extremely difficult to do. How could he control his strength? Furthermore, what was this technique?

"The covert force isn't like the Clear Force, it can simply explode with strength."

Mordeni said, "If you want to use the covert force, you must be very familiar with the control of the Genuine Qi