All roads lead to Rome. 【谚】 条条道路通罗马(殊途同归)
When you are at Rome, do as Rome does.=When in Rome, do as the Romans (do).=Do in [at] Rome as the Romans do. 【谚】 入国问禁,入境随俗
Rome was not built in a day. 【谚】 罗马不是一天建成的(伟业非一日之功).