Two people or parties are inextricably linked, sharing a common fate or destiny, such that neither can separate from the other or thrive/suffer independently.
他们俩是多年的搭档，可以说是一条线儿拴两蚂蚱，彼此依赖，共同进退
They have been partners for many years; it can be said that they are two grasshoppers tied on one string, relying on each other and advancing or retreating together.
Era:
Early Modern
Frequency:
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