Black Iron Order

My name is Dong Zhu, a blacksmith. When I was thirteen years old, my enemies came to visit, and my father took two people in the foundation building stage and blew them up together. Before he died, he said something to me: "Believe three points, leave seven points, and don't trust others with your life." My meridians are 90% blocked and my cultivation is slower than a tortoise. But there is a black iron token hanging around my neck. It is extremely rusty. I picked it up when I was a child. Every time I get stuck in my practice, it generates heat and helps me open up my meridians. I thought it was just good luck. Later, an old monster yelled in my head: "This thing is helping you, but it is also eating you. You have to pay back what you use." I ignored him. Without it, I couldn't even enter the sect's mountain gate. Only later did I find out that this broken piece of iron was made by the last Taoist ancestor of the Dharma Ending Era. Whoever receives its teachings will live forever—and become his shell. None of my "insight" and "good luck" are mine. But I've used it for many years and can't get rid of it. But I have a problem - I hate other people making decisions for me. Do you want to use me as a container? Break your hand.