On the second day, embark on a hiking adventure to explore the natural wonders surrounding Tianchi Lake. Choose from a variety of hiking trails that cater to different fitness levels. For a moderate hike, consider the Heavenly Lake Peak Trail, which offers panoramic views of the lake and the surrounding peaks. If you're up for a challenge, opt for the Tianchi Lake Circuit Trail, a longer trek that takes you through lush forests, alpine meadows, and stunning viewpoints. Along the way, keep an eye out for unique flora and fauna, including rare species of birds and wildflowers. After a day of hiking, relax your tired muscles with a soothing dip in one of the natural hot springs nearby.