13 days ago 
X1's Song Hyeong Joon is trending worldwide as fans celebrate his birthday.
Fans are celebrating the rookie idol's 18th birthday using the hashtag #우리비타민_송형준_생일축하해 (HappyBirthdayToOurVitaminSongHyeongJun), reaching number five on trends worldwide.
Fans have been congratulating him via tweets, stating:
Happy Birthday Song Hyeong Jun
— StrayKidsTeam* (@anelsaalexander) November 29, 2019
To our dearest Hyeongjun, stay healthy and smile.#우리비타민_송형준_생일축하해#Happy_18th_HJDAY #X1 pic.twitter.com/h1ibJQfYkw
Hyeongjun being the nations baby boy! Too much UwUesss #Happy_18th_HJDAY#빛나는형준이의_열여덟을_축하해#우리비타민_송형준_생일축하해 pic.twitter.com/bIa3myWuCu
— Wake me up when it's Hyeongjun's Birthday 🍋 (@02LineLeader) November 29, 2019
Happy birthday to Hyeong Joon!
3
Don't understand the downvote, but ok.
Happy birthday!