After completing the Shikoku pilgrimage, I finally understand the various misunderstandings about Japanese society on Chinese social media.

To understand Japanese society in all its facets, first you must realize that Japan is actually a hidden Buddhist country.
The so-called labels like following the "air" rules, craftsmanship, being taciturn, eating little, restraint, hypocrisy, politeness, otaku, and so on, all stem more or less from Buddhism and the Japanese people's way of living and modifying Buddhist teachings.
Let's look at a set of numbers: Japan has about 77k temples, while there are only 56k convenience stores; if you include shrines, which number around 81k, they far surpass the number of convenience stores.
Next, a batch of common phrases: "ありがとう (Arigatou, meaning 'Thank you' or 'Much appreciated')", "お陰様で (Okagesama de, meaning 'Thanks to you')", "いただきます (Itadakimasu, meaning 'Let's eat' or 'I humbly receive')", "もったいない (Mottainai, meaning 'What a waste')", "無常 (Mujou, meaning 'Impermanence')", "縁 (En, meaning 'Fate' or 'Connection')", "お疲れ様 (Otsukaresama, meaning 'Good job' or 'Thank you for your hard work')"—almost all the core expressions of daily language originate from Buddhist worldview.
Discussions about Japanese phenomena on Chinese social media are mostly based on modern or Western logic, psychology, and reasoning, but these cannot fully encompass the entire Buddhist system, especially in Japan where Esoteric Zen Buddhism is mainstream.
This kind of profound Buddhist philosophy was cut off for thirty years after the 1949 liberation, and the reconstructed Buddhist teachings mainly follow the simple practice of reciting Amitabha Buddha in the Pure Land Sect, which is completely different.
Therefore, it is normal and logical that Chinese people cannot understand the Japanese.