A Walnut Tree Amidst The Gardens Sumeru Hidden Achievement

A Walnut Tree Amidst The Gardens in Genshin Impact is a hidden achievement in the Wonders of the World category that completes the Agnihotra Sutra questline. Along with the achievement, a check mark will appear in the forest adventure journal of Aranyac's book (section IV), but the game will not tell you what actions you need to take to do this.

↑ How to get A Walnut Tree Amidst The Gardens achievement

Complete the following requirements in order to access the additional dialogue with Khayyam, during which the achievement is acquired:

• Complete the main quests Agnihotra Sutra: Starry Night Chapter, Risen Moon Chapter, Final Chapter.
• Complete the world quest For A Better Reunion.
• Complete 4 final quests Agnihotra Sutra: Aranaga’s Memory, Aranakin's Old Friend, Aragaru’s Drawing, Memory’s Final Chapter.

After completing Memory’s Final Chapter, you should wait 1 in-game day (or change the time on the Paimon clock) and go deep into the Mawtiyima Forest.

↑ Ask Khayyam about forgotten memories

From the eastern teleportation point in the Mawtiyima Forest, float southwest. Below you can see a green hut, near which Khayyam stands, looking at the forest from a cliff. During a short conversation, the scientist will thank the Traveler. After talking, get the desired achievement and other nice prizes.

↑ Rewards

The final conversation will reward the player with the following prizes:

• Primogems - 20.
• Hero’s Wit - 2.
• Adventure EXP - 100.
• A tick in section IV of the forest adventure journal of Aranyac's book.
• Achievement A Walnut Tree Amidst The Gardens (5 primogems).