Is it necessary to learn Wei Zi's fighting skills, Daoism, four pillars and eight characters, and plum blossom easy to count?

No need. Wei Zi Dou Shu, Daoism, four pillars and eight characters, and plum blossom Yi Shu are traditional numerology in China, and each technique has its own unique theoretical system and application method. If you are interested in these skills, you can choose one or more of them to study and explore. Learning numerology and numerology can help us better understand ourselves and others, but we need to keep a rational and objective attitude and not be overly superstitious and dependent.