換湯不換藥（換湯不換藥）　

◎ 換湯不換藥 huàn tāng bù huàn yào

[a change in form but not in content] 比喻只改變形式,而不改變實(shí)質(zhì)內(nèi)容

北伐軍來(lái)了,只是多添了些新軍閥和新政客…人們都說(shuō),這是換湯不換藥