You can enter the Snake Valley Secret Valley only after upgrading the Dimension Gate to Level 6. For black iron miners, the Snake Valley Secret Valley is a paradise for collecting black iron. In addition to upgrading to Level 45, Dimension Gate 6 also requires completing 38 commissioned tasks in Bicchi City. Some simple tasks can be completed through the automatic navigation in the game. Some of the tasks do not have any clues, which is really a headache. The following is the most comprehensive guide to Bicchi City commissioned tasks!