Tengjhih was originally a training forest for Kyoto University in Japan. In 1950, the Laonong Forest Road (now Tengjhih Forest Road) was opened as a connecting road to the outside world. In 1966, the Forestry and Conservation Administration established the Laonong Work Station in Tengjhih. At that time, for the purpose of forest fire reporting and preventing illegal logging, six lookout towers were set up within the jurisdiction, located at Lunzaiding, Fenggang Mountain, Zumu Mountain (1,218 meters), Meilong Mountain (1,385 meters), Dongtengzhi Mountain (1,804 meters) and Shishan (2,818 meters). When fire smoke was discovered, the fire location was determined by two-point or three-point intersection method, and the work station was immediately notified by telephone. The Tengjhih Lookout is 1,804 meters above sea level. It was originally a two-story building made of steel frames and aluminum sheets. The first floor was the living room for the stationed personnel, and the second floor had glass windows on all four sides. There was a turntable inside to set the azimuth to locate the fire. There is a wired telephone inside for communication purposes. There are gutters on the roof to collect water for domestic use. After the establishment of Tengjhih National Forest Recreation Area in 1983, the purpose of the lookout tower changed from forest fire reporting to sightseeing. After the Baoshan checkpoint was withdrawn in 1997, the number of tourists increased rapidly. The area around the lookout tower and the trails along the way were severely damaged, with tree roots exposed. For the sake of land survival and tourist safety, it was rebuilt into the current viewing lookout tower in 2002.

The Cryptomeria japonica platform is the largest recreational area and was once one of the most frequently visited recreational areas by tourists.

Mengzong bamboo prefers a relatively cool climate, so it will not completely stop growing in winter on plains or in medium and low altitude mountainous areas. It will still produce a small amount of shoots, but the shoots are smaller in size and are called "winter shoots." Winter bamboo shoots are certainly not the only bamboo shoots of Mengzong bamboo. The bamboo shoots mainly emerge in spring. Spring bamboo shoots can grow into straight and thick bamboo poles. A large bamboo forest is really charming!

In winter, Tengjhih is covered with heavy fog, and you can climb up to see the sea of ​​clouds over the mountains.

The end of the Spruce Trail is connected to the observation deck, which is the best place to enjoy the cherry blossoms when they are in full bloom in February and March.