C413 The Empyrean Terminus Sect's Great Array

Tang Weiji knew very little about Tiandu Formation. He had interacted with Tiandu Formation a few times, such as when the Black Dragon first came to Tiandu, or when Lee Si attacked him in Tiandu, or when the Black Dragon and Wine Seller sent him to Tiandu.

Of course, after thinking about it carefully, it was impossible for it to only be this many times. But no matter what