Thuja According to historical records, "Thuja" is a precious rare cypress plants, while its growth in the cliffs, and therefore was called "Thuja." Thuja is mainly produced in China's Sichuan Daba Mountains, the Taihang Mountains in North China, due to 300 million years ago, and dinosaurs in the same era, flourished in the Cretaceous, is the world's Expert Panel trees, (SSC) botanist called the world's rarest and most ancient gymnosperms, by the World Conservation Union (IUCN) announced for the critically endangered species, is the world's only living fossil plant, is China's unique "national treasure" plant, known as "China's national treasure." "plants panda." Thuja extremely slow growth, a hundred years only grow to 10 cm thick and 3 meters high. Generally grown at an altitude of 700 to 2100 meters of the cliffs cliff crevices. Positive tree, little shade, Low dry soil, avoid stagnant water, like air and calcareous soil moist, acidic soil and saline soil intolerance; require moderate temperatures over 32 degrees growth arrest at -10 degrees temperature for 10 days That is subject to frost damage. Thuja because in extreme environments grow, thousands of years, after the nature of trials and hardships, drain the essence of heaven and earth, the accumulation of years of incense, the spirit of magic no similar comparable. Because of extremely slow growth, but a century Ying Chi, the public has the "Millennium pine, cypress years," said Bo refers Thuja and years.