"Call of the Nameless City" Hidden Achievement and Luxurious Chest - Sumeru

The Mysterious Parchment is one of the rewards for the riddle in the Devantaka Cave. But in order to solve it, first you need to get the Strange Parchment and “upgrade” it to the Whisperer. To do this, you will have to complete two time trials, go fishing a little, and also go through the Vimana-agama quest chain. The order is not important.

Teleport to the waypoint north east of devantaka mountain and head south east. you need to complete a Time Trial Challenge– this one involves combat so make sure to have a strong reliable party before starting this. Defeat the enemies within the time limit to get a Remarkable Chest. This chest will give you a Furnishing and a Guiding Parchment.

Teleport to the Devantaka Mountain Statue of the Seven and glide southeast towards the giant Ruin Guard where you’ll find a Time Trial Challenge located near the base of its arm. Start the Time Trial Challenge and use the four-leaf sigils to quickly make it to the top of the Giant Ruin Guard. Make sure to collect the Dendro particles on the way else you’ll fail this challenge. Once you complete it you’ll get a normal chest which will give you the Unsealed Parchment.

Teleport again to the waypoint north east of devantaka mountain and head south. Glide down towards the fishing spot and start fishing. There’s a chance for you to obtain the Whispering Parchment here. Continue to fish until you get it.

Teleport to the Devantaka Mountain Southwest Waypoint and head north towards the marked campsite. Once you reach the campsite you’ll notice four fire stands nearby. Light them up in an anticlockwise order with the one directly under the camp gate being the last.

This will give you a generous Luxurious Chest and the ‘Call of the Nameless City’ Achievement. This will also contain the Mysterious Parchment which will solve the Parchment Puzzle Story.