Can you understand this? Hahahaha!

Yes, I can. It's too hard for foreigners

Yeah I can understand hahhaha. It's kind of a tongue twister, funny but so difficult for the foreigners.

yes

Its to test the polyphone 行, it has two pronunciations but utterly different meaning:

行 (háng), industry, profession, vocation

行 (xíng), be good at, capable, competent

干 (gàn), do, work

人要是行，干一行行一行。一行行行行行，行行行干哪行都行。

Rén yàoshi xíng, gàn yīháng xíng yīháng, yīáng xíng háng háng xíng, háng háng xíng gàn nǎ háng dōu xíng.

If a person has power capability, he/she was very good at any work. If he/she does well in one industry, he/she should do well in any industry.

要是不行，干一行不行一行。一行不行行行不行。

Yàoshi bùxíng, gàn yīháng bù xíng yīháng, yīháng bùxíng hángháng bù xíng.

If not, he/she does work in an industry, and not good at this industry. Thus, if failed in the industry, he/she will do not good at any industry.

行行不行，干哪行都不行。

Hángháng bù xíng, gàn nǎ háng dōu bù xíng.

If a person does a bad job in any industry, certainly not good in an industry.