On a rainy afternoon in Guilin, one of the best things to do is to visit the Reed Flute Cave. This natural limestone cave is famous for its stunning stalactite and stalagmite formations, illuminated by colorful lights. As you walk through the cave, you'll be mesmerized by the intricate shapes and patterns created by nature over millions of years. The cave is also home to various rock formations that resemble animals, plants, and even mythical creatures. Exploring the Reed Flute Cave is a unique and enchanting experience that will leave you in awe of Guilin's natural beauty.