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When Autumn and Dew Meet is a Genshin Impact Wonders of the World achievement that can be obtained by letting Electro Regisvine perform his Electric Charged Collision. Before you begin, make sure you have access to the boss cave in the Mawtiyima Forest on Sumeru.
How to let Electro Regisvine perform his Charged Electric Collision in Genshin Impact
Like other Regisvines, the Electro Regisvine’s nucleus will move between the corolla and the roots. Whenever the boss switches between the two, he will summon a triangle node, which can be removed by attacking him. If you are trying to get this Achievement, you must not attack any of the nodes.
The first triangle node (pink) will appear shortly after the battle begins. don’t destroy it. Instead, wait until the Electro Regisvine core forms at its roots, which will cause another triangle node (purple) to appear. In addition, don’t destroy it.
Related: How to get the Daisy, Daisy Sumeru achievement in Genshin Impact
Once there are two nodes, wait for them to crash and it will take you down with a massive explosion. Get hit by the attack to immediately get the hidden achievement called When Autumn and Dew Meet. If you accidentally destroy the nodes, you can try again by facing the boss again.
For more Sumeru Exploration guides, check out How to Solve the Puzzle on Top of King Deshret’s Mausoleum in Genshin Impact here on MyFullGames.