Pak lahir dan tumbuh besar di [[Australia]]. Ayahnya adalah seorang [[Mongol|Mongolian]]ian dan ibunya adalah seorang [[Orang Tionghoa|Tionghoa]]. Mereka pindah ke Australia sebelum Pak lahir.<ref name="skypost">{{Cite web |url=https://skypost.ulifestyle.com.hk/article/2157256/%E6%A0%A2%E5%A4%A9%E7%94%B7%20%E5%A4%A2%E6%83%B3%E5%A4%A7%E7%94%B7%E5%AD%A9 |title=栢天男 夢想大男孩 |date=September 10, 2018 |publisher=Sky Post |access-date=May 20, 2023 |language=zh |archive-date=November 25, 2020 |archive-url=https://web.archive.org/web/20201125174820/https://skypost.ulifestyle.com.hk/article/2157256/%E6%A0%A2%E5%A4%A9%E7%94%B7%20%E5%A4%A2%E6%83%B3%E5%A4%A7%E7%94%B7%E5%AD%A9 |url-status=live }}</ref>
