Dear [Tên bạn của bạn],

I hope this letter finds you well. I wanted to share with you about a recent trip I took to Cuc Phuong National Park. It's located about 100 km from my hometown and I went there by bus.

The sights in the park were absolutely beautiful and breathtaking. I saw various types of flora and fauna and the view from the top of the mountain was magnificent. The weather was temperate with a cool breeze, which made the hike up the mountain even more enjoyable.

I felt so happy and relaxed during the trip. Being surrounded by nature and away from the hustle and bustle of the city was exactly what I needed. I also learned a lot about the different species of animals and plants that call the park their home.

Overall, it was a great experience and I highly recommend a visit to Cuc Phuong National Park. I hope you can visit it someday and experience its beauty for yourself.

Take care and I look forward to hearing from you soon.

Sincerely, [Tên của bạn]