Fight to pray to ghost and become ghost. This one, I don't know what to say. My grandparents used to pray all kinds of rituals too. Pray to gods, ghosts, heaven, moon, all kinds of things. That family tradition stopped with their passings. My father and uncles all don't do that except go to pray at ancestral tablets during Qingming. It's paying respect and memory rather than praying. They also used join some 7th month clubs. Every month paid membership fees and at 7th month, got buckets of goodies and flowers to go makan. They joined also not for the praying, but rather for friendships and business connections. By my time, I don't join already since I don't know the oldtimer organisers well and I don't believe anyway.