Why can foreign comedies be understood by people in China and not by foreigners in China?

Jokes are different. Sometimes foreigners will laugh at a sentence, but China people will not respond.

Huang worked hard to make a speech and studied foreigners' jokes for seven years before he began to speak as a newcomer.

He looked stiff, wore glasses, waved timidly, and spoke English with a China accent: "Hello, I'm Irish", which drew laughter.

Huang described his learning experience in a speech in Zhuhai: "My English was not bad when I was in China, but it didn't suit me when I arrived in the United States." A chubby girl suddenly burst into laughter. Huang stopped to look at the classmate who was busy covering her mouth and laughing. "Oh, this is no joke." Caused a second wave of laughter.

There seems to be no punch line in these two places, so the punch line of foreigners is different from that of China people.