The Milestones quest given by Cang Jei is now repeatable. In addition, Cang Jei now offers a new optional reward: 'Receptacle of Rare Trophies' (25 Rare Trophies). The optional rings he already offers are no longer unique, meaning you can retrieve a second one. The quest is shareable and can now also be completed at Can Jei's Shrine in Paikang, located near a crossroad between Glade of the Elephant God and the Jade Citadel. (Note: You need to re-claim the quest to get the new optional reward).
Although reclaim maybe means the note to go see Conan we all got way back in the day, in our claims window? That seems tedious though, but it is Funcom .
It's looking like the re-claim part of the quest is broken. I also re-claimed the Summons, and got a quest to speak with Conan. There was no dialog option regarding visiting Khitai or anything regarding the Milestones quest.
It looks like for the time being we'll need to have it shared to us.
Go to the milestone of entity in paikang, there is a statue next to it, click the scroll near the feet of the statue (maybe hard to click because some grass may cover it). then the four eyes man will pop up, talk to him to get quest.