Evidence 1 shows the word “爆肚兒” which comes from a famous dish of Beijing Cuisine (北京菜). (Also used widely in Tianjin.)


▲ 贾采珠: 《北京话儿化词典》, 北京: 语文出版社, 1990.9, ISBN 7-80006-173-6/H·49, p. 318
The word “爆肚𖿲” reads bàodǔr, and “肚𖿲” (dǔr)/“肚子” (dǔ·zi) and “肚子” (dù·zi) are not the same, one is “stomach”, the other one is “tripe”.


▲ 《现代汉语词典（第7版）》, p. 322

In Taipei, “爆肚兒” reads bàodù·er, and it has become a kind of cooking method mainly.

The following picture shows a piece of news related to it in Taipei.


In Cantonese, the word “爆肚” reads baau3 tou5, that means “to ad-lib (a speech); to improvise”. This word comes from the term of Cantonese Yueju Opera (粤剧). 肚 here means “knowledge and so on”.

Add the secondary radical as 50.0 (巾), SC=7, FS=1

It is not easy to confirm the semantic rationale, so two radicals will be better.

Add the secondary radical as 50.0 (巾), SC=7, FS=1

It is not easy to confirm the semantic rationale, so two radicals will be better.