at the height of one’s power and influence; enjoy great popularity (/fame) ❍ 冯永祥听见朱延年三个字，神经立刻紧张起来。朱延年三个字，在西医界从～变得臭得难闻了。(周而复《上海的早晨》Ⅰ—102) Feng Yongxiang’s nerves at once tautened at the mention of the name Zhu Yannian. It was a name that had sunk from great fame to notoriety in the western-drug business.
红得发紫hong de fa zi
(of a person)be extremely popular
红得发紫hónɡ de fā zǐ
比喻名声或权势正处于鼎盛时期。be at the height of one’s power and influence, extremely popular, enjoy great popularity