Mortal Grinds Bones

The master gave me an old bone before he died: "Grind it and you will survive." I have been grinding for three years, from being a handyman with useless spirit roots to the sixth level of Qi training. It was discovered that the death of the master was a bloody account that did not match up. On the back of the senior brother's tablet, there is "Wait for me" engraved; on the last letter, it says "Mistakenly trust Chen Ye" When mortals grind bones, they grind bones and dig out the truth. I will pay back the debt of this world one bite at a time, grinding it out