渤 ㄅㄛ ˊ bó 澥 ㄒㄧㄝ ˋ xiè 桑 ㄙㄤ sāng 田 ㄊㄧㄢ ˊ tián lit. blue seas where once was mulberry fields (idiom, from 史記|史记[Shi3 ji4], Record of the Grand Historian); time brings great changes life's vicissitudes