xīn​píng​jiù​jiǔ

old wine in a new bottle

Senses

新瓶旧酒/ 新瓶舊酒 xīn​píng​jiù​jiǔ old wine in a new bottle

(idiom) something presented in a new form or format while the actual content or substance remains the same; a lack of original ideas

References

synonym 改头换面/改頭換面 → 新瓶旧酒/新瓶舊酒