Oh, thank you for your encouragement very much. I only try my best to explain it. Yeah, I think in China part of the reason why people still use "the nominal age" is due to 12 Chinese zodiac signs. For example, If you were born in the intercourse of the old year and the the new year, i.e., the 12th month of the old year which is also the January of the new year, your zodiac symbol still belongs to the old year, rather than the new year. And I also learned from your blog that Japan abolished the old calendar and shifted into the western calendar from Meiji period, but 24 solar terms and 72 Microseason still remaining. It is the similar case about Emperor era names in China. Of course, now China has no Emperor era names, since there is no Emperor who exists any more. But in ancient China, even in the very recent history--Qing dynasty, people used Emperor era names which is a very old and long tradition, maybe from Han dynasty or even earlier. I have ever seen the characters: 康熙通宝 in the old copper coins. Kang Xi/康熙 is the Emperor era name in Qing dynasty, and his real name is Xuan Ye/玄烨. So Chinese are not strange to Emperor era names.

There are a lot of zodiac pictures during Chinese Spring Festival. After Feb 1st, it will move into the tiger year of 2022. Oh, it is always the happiest and the most sacred time especially for children.