I'm a bit overweight and hadn't originally wanted to hike, but my wife and kids wanted to, so we went along. Cangshan won me over with its charm. Our itinerary involved walking up the Gantong Cableway for nearly 4 kilometers of flat ground, then climbing over a thousand steep steps to the lower section of the Ximatan cableway. Considering the children hadn't yet tackled the upper Ximatan section (over 4,000 meters), the highest point of the entire trip was around 3,000 meters. We didn't experience any altitude sickness, but we took it easy. We even played mahjong and poker for over an hour at the rest stop in front of the Seven Dragon Maiden Pool, focusing on taking our time.
Also, Cangshan is very crowded during Golden Week. If you don't arrive at the Gantong Cableway entrance before 8:30 a.m., you'll inevitably encounter traffic jams and even longer lines at the cableway entrance (we arrived at the tunnel entrance at 8:20 a.m. and waited for half an hour before getting on the cable car). Perhaps Ximatan will be less crowded, but I'm not sure.