The alpine climbs are inside the natural reservation areas declared by Yushan National Park. People who enter Yushan National Park reservation areas need to apply for Yushan National Park entrance permission. The permission is granted only for limited number of persons daily. Sadly, in some climbing seasons (especially some Febraries in recent years, the best times for alpine climbing), the park official would reject any application for entrance permission, even if you specifically apply for alpine climbing in this area.
This information is a public crowdsourcing effort between the Access Fund,
and Mountain Project. You should confirm closures, restrictions, and/or related dates.
A couple of gullies on the north face of Yushan south summit forming some quality alpine climbing routes. These routes are less popular and people claimed FA due to people tended not to share their records in Taiwan and its slightly remote locations and less comfort base camp (Yuanfeng shelter) than the routes on the main summit.
From Yuanfeng hut, 1 hour of hiking on the south ridge and traverse east and down to the base of the north face of south summit.