What kind of life does gray metal belong to?

Gray-gold life belongs to medium life.

According to the inquiry of Mu Ling's Yi-ology, the golden life of ash belongs to middle life, which means that people born in Chen Geng or Xinsi usually have a hard life in their early years and a happy life in their later years, but their marriage and feelings are not smooth all their lives, so they need to change their personality shortcomings. People born in Geng Chennian and Xin Sinian are people with a golden life.