During the passage of Honkai: Star Rail, you may be asked to go to the tempering workshop, but the specific location on the map will not be shown. In this guide from the simhost.org portal (which we have slightly supplemented), you will find out exactly where the hardening workshop is located.
Where is the tempering workshop located in Honkai: Star Rail?
In particular, the tempering workshop can be found on the left side near the center of Rivettown. For those who are not in the know, the hardening workshop is a room with all the boxes and TV screens. We’ve marked it on the map below:
What is the Tempering Workshop for?
Basically, the Tempering Workshop is the location associated with the Wish You Were Here mission that Clara will give you in Yarilo VI, the robot settlement. Once you complete this particular quest, you will receive a message from Clara informing you that the robots have left a gift for you. Once you arrive, you will receive a flower made from scrap metal as a reward.
Also, according to the information you come across along the way, this is the place where you can “recycle old and broken parts” and “refurbish worn parts”. Other than that, it remains a mystery, although it may become more important during future events.