For travelers navigating Seoul, timing is everything. Catching the autumn leaves at Deoksu Palace or taking the cable car up Mount Nam usually requires patient queuing and a light stretch of the wallet. But Seoul’s central Jung District is placing a heavy bet on a single digit to draw tourists deep into its historic core this fall. Starting Wednesday at 10:00 a.m., Jung District will launch its “Gu-Gu-Gu” flash sale, offering 999 mobile tour passes for just 9,900 won ($7.40) each — a steep discount of up to 67 percent. Available exclusively via Naver SmartStore through Sept. 17 and also open to non-Korean residents, the limited-run passes are valid for use through Oct. 31, perfectly timed for the Chuseok holiday and peak foliage season. The strategy marks an ambitious shift toward "stayover tourism." Rather than letting day-trippers hop between headline landmarks, district officials are leveraging steep savings to channel foot traffic into nearby neighborhoods. A single pass covers entry fees and includes perks that usually add up fast, including cable car rides up Namsan, food v