In "Honkai Star Railway", to achieve the "Noble Object Available for Trade" achievement, go to the boat docking area of the Immortal Boat and find the Beggar Gang Master "Northern Beggar" at the stairs. Talk to him and select the relevant options, then spend 64,800 credits in his shop to buy "Noble Moral Approval", which will unlock the achievement.
A guide to tradable noble objects
1. First teleport to the northeast of the second floor of the Jingfeng ship, and find the Beggar of the North in the corner to talk to him.
2. After completing the conversation, you will enter the store and use credit points to purchase the approval of high morals.
3. After purchase, you can obtain noble object achievements that can be traded.