gōng / xǐ / nǐ / xīn / diàn / kāi / zhāng / tóng / xǐ / tóng / xǐ / gǎi / tiān / yì / qǐ / qìng / zhù

恭喜你新店开张！同喜同喜，改天一起庆祝。

Congratulations on your new shop opening! The same to you—we should celebrate together sometime.