HSK 4
Tā gēn tóngyè bǎochí liánghǎo de guānxì.
She maintains good relationships with others in the trade.
HSK 5
Tóngyè zhījiān de jìngzhēng yuèláiyuè jīliè.
Competition within the industry is getting fiercer.
HSK 7-9
Yínháng tóngyè chāijiè lìlǜ jīntiān xiàjiàng le.
The interbank lending rate fell today.