1. "Hu Guang Yan" or "Lake Light Cavern" is famed for its stalactites that shine like diamonds when lit.
2. It once served as a place of refuge for Chinese Revolutionaries in the 1920s, making it historically significant.
3. Local legend says beautiful fairy goddess Guanyin was enamored with the beauty of Hu Guang Yan.
4. Hu Guang Yan hosts a light festival where the caves shine with colorful illuminations, enhancing its natural glow.
5. It holds the record for the "first showcave" in China, being opened for public in 1959.

1. Visit Popular Spots: In Huguangyan, Guangdong, China, the Huguang Yan National Geopark is a must-visit for its stunning natural features including a maar lake and lush vegetation. The park is also home to many historical relics and fossils.

2. Plan Your Itinerary: Due to the natural and beautiful landscapes, it's recommended to spend at least a full day in Huguangyan. A typical itinerary would include exploring the geopark in the daytime, visiting the museum to learn about regional history, and finally enjoying a relaxing boat trip on the lake.

3. Money-Saving Tips: Huguangyan has an entrance ticket but the price is very affordable around 50 CNY (approximately 8 USD). For additional savings, consider visiting during the off-peak season, and utilizing public transportation rather than taxis.

4. Dining: Guangdong province is widely regarded for its culinary scene. It is a great idea to try local Cantonese cuisine during your visit. You would find many restaurants serving local delicacies around the lake area.

5. Best Times to Visit: The region experiences a tropical climate so it's advisable to visit during the cooler months from November to April. Moreover, visiting on weekdays rather than weekends results in fewer crowds, making your trip more comfortable.