The Hainan gibbons (长臂猿), who live in rainforest trees over 10 meters tall, rarely set foot on the ground.     1     (know) as the world’s rarest primate(灵长类动物), the Hainan gibbons have been listed as     2     (critical) endangered species by the International Union for Conservation of Nature.

Fortunately, conservation efforts have seen positive results in recent years. According to the latest     3       (office) figures, the gibbon population in Hainan     4       (estimate) at 36individuals living in five family groups, from 30 in four groups in 2019. The increase in gibbon population comes as China enhances efforts     5     (construct) the National Park of Hainan Tropical Rainforest.

This national park,     6     covers 4,269 km², is home to China’s most concentrated and well-preserved tropical rainforests. Many wildlife that     7       (disappear) previously are returning to their homes thanks to the park. In recent years, Hainan has promoted the construction of the park, strengthened the restoration of tropical rainforests,     8       carried out ecological relocation projects in core protected     9     (area), such as planting more trees to provide food for the Hainan gibbons.

A research center has also been established,     10       experts from home and overseas jointly providing suggestions for their protection. The population of the gibbons is expected to hit between 60 and 70 in 2035, as long as current protection efforts and environmental stability can be sustained.

Seeing these “gardens” is like looking at a universe in a plant pot. The miniature (微型的) branches spread and twist,       1       (demonstrate) the beauty of nature, so as to allow viewers to stop and reflect on the circle of life. The potted landscape of penjing.     2       (be) a representative of top-ranking garden art ever since its existence.

    3     (expected), the Suzhou-style penjing cultivation technique was listed as a national-level intangible cultural heritage (非物质文化遗产) in 2011.     4     penjing, Suzhou gardens wouldn’t be as charming as they are today. Once the construction of a garden is completed, its buildings are set, but planting can grow and change, which makes gardens     5     (live).

The history of penjing     6       (date) back to the Tang Dynasty when the great poet Bai Juyi used some stones     7       (create) miniature landscapes in pots. And the Ming Dynasty marked a boom in the economy of Suzhou, the very period       8     turned the city into a major cultural center. Because of that long history, Suzhou-style penjing is often seen as       9     fundamental school of Chinese planting art.

Penjing works are beautiful, but people think that they were owned by the rich. However, only when they are enjoyed by general     10       (consume) can they benefit from being part of people's wider modern artistic taste.