You have to wait until the day when everyone is in the market. You tell the thief Brinchoff that you are ready, and then you can see the ring in the safe and steal it to put on Marcy. This task will show ring failure. It doesn't matter. You can talk to Brinchoff directly and join the thieves' union.

Elf Age (ME2500-ME0)

The Elf Age is the prehistoric period of Tamriel, which only appears as the background structure of the whole game and is mentioned in various myths. (Note: Although the age of elves is already a linear time, due to the long age and the lack of conclusive written records of human beings, some events still only know the results but do not know the sequence of their occurrence, and the specific year of occurrence is unknown. )

Me 2500- completion of Ardman Jinta

According to the latest archaeological discovery, this Ya Dan Golden Pagoda is the oldest building in Tamril, which was later occupied by the Dylan family on Gaoyanbafeira Island. It was completed in the Elf Age about 2,500 years ago, and it is also regarded as the dating symbol of the Dawn Age and the Elf Age.