self-conceited and insolent on account of one’s ability ❍ 你应该谦虚点，～要不得。You should be a bit modest. It is no good to be self conceited and insolent on account of your ability.
矜才使气jīn cái shǐ qì
矜：骄傲、矜持；使气：意气用事。指依仗有点才华就意气用事。rely on one’s ability and act on impulse, self-conceited and insolent on account of one’s ability