Yunjin Dujuan Luoshu

**Alias: Jurassic Rhododendron** **Family: Ericaceae (Azalea Family)** **Morphological Characteristics:** Tiantai Mountain Yunjin Rhododendron is a large evergreen shrub, typically reaching heights of four to five meters. It features a rounded canopy, a straight trunk, and dense branching. Its leaves are leathery, similar in shape to those of the *Pseudolarix* tree, with a dark green, glossy surface on top and a yellowish hairy underside. Each summer, the plant produces clusters of flowers at the top, resembling arrowheads. When in full bloom, seven to thirteen small flower clusters form a striking floral display, creating a breathtaking "sea of flowers." This spectacular sight has earned it the nickname *"Thousand-Flower Azalea."* The flowering period usually lasts about seven days, with colors ranging from red, pink, white, to purple. These vibrant hues blend together to create a colorful "flower sea," offering a stunning visual experience. Surrounded by Huangshan Pines, Japanese Cedars, and other spring blossoms, the scene captures the delicate beauty of a small red flower among the green foliage. Visitors feel as though they're walking through a vivid painting, immersed in nature’s artistry. Every May, the Huading Scenic Area becomes a paradise of Yunjin Rhododendrons. They bloom along roadsides, rocks, forests, and slopes, appearing like stars scattered across the landscape—some in clusters, others spread across hills and plains. At Guiyun Cave, thousands of trees create a vast ocean of flowers. The Dong Mao Peng area showcases individual trees or groups of three to five, swaying gently in the breeze. The ancient poet Zhang Lianyuan of the Qing Dynasty once described this scene: *"Cui Yi leisurely, the name of the flower to spend at the same time. The most mercy Hongxie, high Yingbi Furong. Qi Shu should be the same species, Taoyuan Xu and. No one moved to the court, vacant Baiyun seal."* His verses likened the Yunjin Rhododendron to a magical realm, comparing it to the mythical Qishu and Bi Peach, and suggesting that only within the clouds of Baiyun could one truly appreciate its beauty. **Additional Knowledge:** Rhododendrons have long been admired for their natural beauty. In the Eastern Jin Dynasty, Sun Yi praised Tiantai Mountain in his essay *"Mount Tiantai Fu"* for its lush landscapes, including the rare and elegant Yunjin Rhododendron. Through careful environmental protection and human efforts, many ancient trees in Tiantai Mountain have thrived. The Yunjin Rhododendron, also known as "Jurassic," was noted by the Qing monk Qi Zhouhua in his travelogue *"Taiyue Tiantai Mountain Travel."* He remarked that due to the mountain's cool climate and late seasonal changes, the Jurassic Rhododendron blooms in April, often compared to medicinal herbs and incense used in meditation. This species stands out among the 377 rhododendron varieties listed in *"Illustrated Flora of China."* It is a rare and unique Chinese tree, found mainly in Yunnan and Sichuan. However, only in the Huading area of Tiantai Mountain can one witness a large-scale, ancient forest of these magnificent flowers. Some trees are over 200 years old, forming a rare and beautiful old-growth group. Historically, the Tiantai Mountain Yunjin Rhododendron was introduced to Zhenjiang, Jiangsu, during the Tang Dynasty. Although some were successfully transplanted after the founding of the People’s Republic, they lack the ideal environment of mountains, mist, and wildlife found in Tiantai. The Rhododendron cuckoo, often associated with mountainous regions covered in clouds, is most famously seen in the Huading area of Zhejiang. Here, a vast and spectacular Rhododendron forest stretches across the landscape, offering a rare and breathtaking view. **Two Clouds in Flower Scene** Huading Mountain, the highest peak of Tiantai Mountain, stands at 1,098 meters above sea level. Surrounded by towering peaks and rolling hills, it is home to the famous "Sea of Clouds" phenomenon. Clouds gather year-round in Qiaoyadong, shifting and changing unpredictably. The interplay between clouds and blooming flowers creates a unique and mesmerizing scenery. Standing at the summit, visitors are greeted by a constantly changing and breathtaking view. Fog drifts among the flowers, and the sea of blossoms reflects the swirling clouds, creating an ethereal atmosphere. The ancient Yunjin Rhododendrons, with their wide canopies and abundant blooms, are considered one of China’s natural wonders. The Huading National Forest Park is not only a summer retreat for enjoying the clouds and exotic flowers but also a place where nature’s beauty comes alive. It is a must-visit destination for anyone seeking a true connection with the wild.

Air Purifier

Dynamic disinfection is a process of disinfection and cleaning of air and surfaces in indoor Spaces. A
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zone.

Air purifiers, also known as "air cleaners", air purifiers, and purifiers, refer to decoration pollution that can absorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, etc. , bacteria, allergens, etc.), household appliances that effectively improve air cleanliness, are mainly divided into household, commercial, industrial, and building.

There are many different technologies and media in air purifiers that enable it to provide clean and safe air to the user. Commonly used air purification technologies include: adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, superstructured photomineralization technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, etc.; material technologies mainly include: photocatalyst, activated carbon, Carbon core filter technology, synthetic fibers, HEAP high-efficiency materials, negative ion generators, etc. Most of the existing air purifiers are composite types, that is, a variety of purification technologies and material media are used at the same time.

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