✦Tang'an Dong Village itself is free to visit. If entering through Zhaoxing, the real cost is mainly the Zhaoxing ticket, Zhaoxing scenic shuttle, and Tang'an round-trip transfer.
✦Tang'an is small. Most visitors need 2-3 hours. If hiking back to Zhaoxing, leave at least half a day.
✦Food, drinks, and toilets are more limited than in Zhaoxing, so bring water and a simple snack before leaving.
✦Stone paths, terrace edges, and downhill sections can be slippery. Shoe grip matters more than appearance.
✦For sunrise or sunset, staying in Tang'an is possible, but lodging choices are fewer and simpler. For meals and transport, staying in Zhaoxing is more reliable.
✦Do not hike the Tang'an-to-Zhaoxing route in rain, at night, or alone. The route is quiet, and phone signal and signs should not be fully relied on.
✦If you only want the full view, you do not need to stay overnight in Tang'an. Ride up, spend two or three hours, then return to Zhaoxing.