热热闹闹 + 的 + Noun
热 (rè) literally means 'hot' but in the reduplicated form 热热闹闹 (rèrè nàonào), it contributes to the meaning of 'lively,' 'bustling,' and 'festive.' Reduplication in Chinese intensifies the descriptive quality of adjectives. This form is used to vividly depict a scene full of energy, noise, and activity.
过年的时候,家里热热闹闹的,特别开心。
guònián de shíhou, jiā lǐ rèrènàonào de, tèbié kāixīn.
During Chinese New Year, the house is lively and bustling, and it's especially fun.
婚礼办得热热闹闹,来了很多亲朋好友。
hūnlǐ bàn de rèrènàonào, lái le hěn duō qīnpéng hǎoyǒu.
The wedding was held in a lively and festive manner, with many relatives and friends attending.
孩子们在院子里热热闹闹地玩耍。
háizimen zài yuànzi lǐ rèrènàonào de wánshuǎ.
The children played noisily and happily in the yard.