Unboxing and review of the Insta360 Ace Pro 2 with Leica lens, mounted directly on a road bike's stem and handlebars for high-intensity real-world testing. The footage spans from the winding, steep climbs of Lala Mountain (拉拉山) to long-distance rides through Japanese city streets, thoroughly evaluating the flip screen and in-body stabilization on rough terrain. The lens specifically captures Leica color rendering under harsh backlight and dappled shade, and during nighttime rides, it goes head-to-head with the GoPro 13 and DJI OM 5 in low-light quality. Can this dual-chip flagship solve cyclists' pain points when shooting in extreme lighting? The detail differences revealed in the night comparison are worth seeing firsthand.