Genshin Impact has recently received a 3.2 update that adds exciting features such as new events with primogems on offer, a new powerful weekly boss called the Scaramouche and the addition of a new character known as the Dendro Archon Nahida. It is a comprehensive update that will certainly keep players engaged as it further continues the Sumeru storyline.
Mirror of Munshin is a talent level-up item which can be used to level up some combat talents beyond their base level 6. If you wish to level up the talent of your character then chances are you might need this item.
This guide will tell you how to obtain the Mirror of Munshin in the game.
How To Get Mirror Of Mushin

In order to get the Mirror of Munshin, first you need to complete the Archon Quest Chapter III, Act V: Akasha Pulses, the Kalpa Flame Rises. There are a total of 5 quests in this questline and completing them will take around 3 to 4 hours of playtime.
Another thing worth noting is that you need to be Adventure Rank 35 or above to start these quests. It can take quite some time to increase the adventure rank especially if you are new to the game.

Once you have completed all the quests, head over to Joururi Workshop in the Chinvat Ravine in Teyvat at the above location in the Sumeru region. There you need to select a challenge with a recommended party level of 70 or above.

Defeat the Scaramouche weekly boss and then interact with the Trounce Blossom by spending 30 Original Resin to claim the rewards. You will receive the Mirror of Munshin as a drop from these rewards.

The Mirror of Munshin can be used to level up the combat talents of your character beyond the base level 6 however currently no character in the game requires it. You can also use the Mirror of Munshin to craft the Daka’s Bell and Puppet Strings items.
That’s it, now go ahead and defeat the Scaramouche boss to get the Mirror of Munshin!