Some Taiwanese Are Going Back to School?

Strange times. Around 150, mainly young people, in Taiwan have changed their names to 'salmon' (https://www.theguardian.com/world/2021/mar/18/taiwan-official-urges-people-to-stop-changing-their-name-to-salmon). The name changes are a direct consequence of a 2-day promotion by a chain of sushi restaurants in Taiwan. The restaurants offered any customer, whose ID card included 'gui yu' (the Chinese characters for 'salmon'), an all-you-can-eat sushi meal for themselves and up to 5 friends. This was popular but it strikes the authorities as fishy. One can't help wonder, what other names people might adopt, to get a free deal?