Ask a fortune teller to help my girlfriend calculate her life. 1990, 16 (lunar calendar) in the first month.

Yes, buy her a jade Guanyin red rope necklace, saying it's a family heirloom or something. Remember not to let her pick it. It's best to be waterproof and store it in the shower. It will be ok when she is over 47. Besides, you are not very strong, so you should pay attention to maintenance, otherwise your daughter-in-law will have nothing to do with her second marriage.