凑热闹

taːm zaː tʃɔ vuj hɔɜŋ həːɜt̪ ɹɪkwaɪəz aː dɪskɹɪpʃən ɒv ʒɔjniŋ tɛ aktɪvɪti

In Vietnamese Tham gia cho vui, hóng hớt (requires a description of joining the activity)

To join in the excitement or activity of a lively event or gathering, often without a specific purpose.