The next day, take a bus to Laotangou Scenic Area, visit Yuntai Waterfall, the largest single-stage waterfall in Asia (up to 314m), visit the rocks and landforms in different geological periods, and learn the true origin of stone rot in Guhai! Finally, visit Xiaozhaigou scenic spot with three steps, one spring, five steps and one pool: Duck Waterfall, Lover Waterfall, Slimming Stone, Sword Test Stone, water curtain cave and Dianjiangtai. You can go to Kaifeng by car in the afternoon.
Three days, visit the northern Dengfeng Shaolin Temple (ticket 100), and then spend some time visiting the Yellow River tourist area and taking a hovercraft on the Yellow River, so that the next day's time is enough. You can live in Zhengzhou when you come back and go to Kaifeng as soon as possible (72KM drive 1.5 hours).