Guidao Changsheng: I Am Really a Trade of Equal Value

The spiritual world appears, and evil worship and treachery are rampant. Xu Yu, a social animal who loves antiquities, travels through the world of law cultivation with a copper scale. With the steel scale, he can trade with people regardless of distance and improve the quality of traded items. He refined a low-grade evil-repelling elixir, upgraded it to a top-grade pill in a trade, and saved people's lives hundreds of miles away. Refined the hidden array disk and upgraded it to a legendary array weapon to help Zhengdao defeat the shocking conspiracy. Slowly, a legend of a mysterious salesman spread among monks from all walks of life in the legal world was born... The Northern Barbarians have been coveting the fertile land of Zhongzhou for a long time, and the Western Barbarians want to spread the word with strange and cunning tactics, and the power of evil worship is emerging. This is the story of Xu Yu, who grew from a casual cultivator in a remote place to a giant through "fair" transactions, looking for immortality. This book is also called "Selling Goods and Becoming Strong in the Fairy World" There are 880,000 words in this book, so please feel free to read it.