Secondary millet, which means goods in English, sounds a bit like "millet" in Japanese, which means various commodities, that is, what we usually call periphery, and secondary millet, which means virtual periphery, such as cartoon posters, hand-made and so on. Millet: refers to peripheral products.
personality culture: this meaning is a special meaning derived from the development of animation industry in China. At this time, the second element specifically refers to "personality", "trend" and "youth", which is a new meaning given to the second element by China capitalists in order to stir up the ACGN industry. This usage is rarely used in ACGN circles, and "I can't afford it, I can't afford it" is a mockery.
Meng Er Culture: Meng Er is the abbreviation of "MengMeng Er Yuan", which is often derogatory. This meaning is a new meaning given to the second element by some immature animation lovers who deify it too much. It is similar to the otaku culture and is characterized by its strong exclusiveness and superiority, such as "noble second element disdains to go along with the third element".