There was a conflict of interest between his business dealings and his political activities.

他的生意和政之间存在着利益冲突。

Their interest clashed with ours.

他们的利益与我们的利益冲突。

Harmonious society is a society that being able to resolve and mitigate the conflict of interests,and that being able to realize beneficial equability.

和谐社会就是一有能力解决和化解利益冲突,并由此实现利益均衡的社会。