C1570 Shadow mastery

"The Shadow Kill, literally speaking, is transforming into a dark shadow that kills people."

In the marshland, Cheng Feng was deep in thought: "Actually, I have long done this, but I have not reached the level of Perfection."

"The Shadow Kill's Mastery Stage, should be precisely wanting me to be faster and hide it even better."

"But how?"

Cheng Feng thought hard. Suddenly