Genshin Impact : Teachings of Diligence

To obtain Teachings of Diligence, you need to complete the Taishan Mansion, a Domain of Mastery located in Liyue. Taishan Mansion is between Qingyun Peak and Cuijie Slope. Teleport to Minlin, the Teleport Waypoint located at Jueyun Karst, and the Taishan Mansion is to the northeast, down at water level. To enter Taishan Mansion I, you need to be Adventure Rank 27. It is recommended to have your party about Level 38 and characters that use Cryo, Electro, and Hydro. Check the image below for the exact location.

The Taishan Mansion rotates the rewards you get based on what day of the week it is. On Tuesdays and Fridays, the domain is called Heart of the Flames, and you can get the Diligence Talent Level-up Materials. On Sunday, you can choose whatever domain you desire. Teachings of Diligence are rewarded for completing Domain of Mastery: Heart of the Flames I, and you can receive between one to three of them per run. To complete Heart of the Flames I, you must kill all 20 enemies within 360 seconds.

• The 20 enemies are split into two waves:
  • First Wave
    • Pyro Slime x11
    • Large Pyro Slime x3
  • Second Wave
    • Pyro Slime x4
    • Cryo Abyss Mage x1

Due to the Pyro enemies, it is wise to bring along characters that inflict Cryo, Electro, and Hydro damage. When inside a Domain of Mastery, you are inflicted by a Ley Line Disorder. This is a debuff that is never removed throughout the duration of the Rift. In Heart of the Flames I, you have the following Ley Line Disorder:

Your character will be periodically inflicted with Smoldering Flames, causing you to take Pyro DMG until the inflicted Pyro element is removed.

If you have completed the domain successfully, to claim the rewards, you need to spend 20 Original Resin or use a Condensed Resin to receive double. You do not have to claim the rewards if you choose not to do so.