宠辱不惊 (受宠受辱都无动于衷) remain indifferent whether granted favours or subjected to humiliation -- unmoved either by gain or loss; not moved by official honour or disgrace; undisturbed either by favour or disgrace
受宠若惊 be overwhelmed by an unexpected favour; be overwhelmed by a special favour; be overwhelmed by a superior's favour; be overwhelmed by flattery and honour; feel as if put upon a pedestal; feel overwhelmingly flattered; receive a favour with awed excitement
翩若惊鸿 fly swiftly as a frightened swan goose; the grace of ""a startled swan""; (of women dancers) moving gracefully