From Gyeongju again to Seoul, the technique is very identical. Visit the Gyeongju Convey bus terminal, and board your bus to Seoul from there. Scan your ticket QR code when boarding the bus. If you want information about community transportation in Gyeongju Check out this url. Gyeongju Cheonil Gukbap: https://gyeongjuofficereal-timere19853.theblogfairy.com/31207446/5-essential-elements-for-gyeongju-office-best-office-information