Did you notice that recently, more and more Japanese commercials appeared on screen? That is normal if their commodities are good and welcome in Taiwan. But a lot of those commercials are televised in Japanese, neither Mandarin nor Fujianese, and that is quite unacceptable.
I do not know if the ad law regulating that any commercial on screen here on the island should be televised in Chinese If it is positive, that means the pro-Japan government is not doing enough due diligence on carrying out the law. FYI, at least I have not seen any commercials televised in English.