喜大普奔

1. • so thrilling that everyone is rejoicing and spreading the word (Internet slang)

     of news etc

2. • acronym from 喜闻乐见 xǐwénlèjiàn, 大快人心 dàkuàirénxīn, 普天同庆 pǔtiāntóngqìng and 奔走相告 bēnzǒuxiānggào

Character by character

• 喜(xǐ)be fond of
• 大(dà)big
• 普(pǔ)general
• 奔(bēn)hurry