Comprehensive martial arts: Give away opportunities and return 10,000 times critical hits!

Story of: Comprehensive martial arts: Give away opportunities and return 10,000 times critical hits!Traveling through the world of mixed martial arts, Zhao Wuxian gets a critical hit return system. By gifting his own items, he can get a critical hit return."You give a gift of Xiantian Pill, which triggers ten times the critical hit and returns it, and you get Xiantian Pill*10!""You give the "Evil Sword Manual" as a gift, trigger a hundred times critical hit return, and get the complete "Sunflower Collection"!""You give me a hundred years of skill, trigger a thousand times critical strike return, and get a hundred years of immortality!""You give me the Phoenix Yuan, which triggers a 10,000-fold critical hit return, and you get the Immortal Phoenix Egg!"Wang Yuyan: "I'm sorry, cousin, Mr. Zhao has been so kind to me. I can only repay him by being a slave."Qiao Feng: "The world is so big, I, Qiao, only obey Mr. Zhao, my benevolence and righteousness are unparalleled!"Yao Yue: "I have become an immortal, but I am willing to wait for you in this mortal world. I only envy mandarin ducks but not immortals!"