Please translate the styles of the four grottoes in China into English.

Four grottoes: Dunhuang-Mogao Grottoes, Datong-Yungang Grottoes, Luoyang-Longmen Grottoes and Tianshui-Maijishan Grottoes.

Dunhuang Mogao Grottoes is located 25 kilometers southeast of Dunhuang.

At the east foot of Mingsha Cliff, on the bank of Quangou River on the west bank of the Great Jordan River in Dunhuang City, caves were dug in the second year of Jianyuan in the former Qin Dynasty (AD 366), with 49/kloc-0 caves, 2,400 statues and 45.00 square meters of murals. The largest existing "world art treasure house" in the world.

Yungang Grottoes is one of the four most famous "Buddhist Grottoes Art Treasures" in China, located about 16 kilometers west of Datong. There are 53 existing caves, most of which were built during the Northern Wei Dynasty from 460 to 494 AD, with more than 5 1000 stone carvings. It extends from east to west for one kilometer and can be divided into three groups.

Longmen Grottoes, located near Luoyang, Henan Province, is a treasure house of ancient Buddhist cave art. These grottoes were dug and carved during the Northern Wei Dynasty (386-534), when the rulers moved their capital to Luoyang at the end of the 5th century. At that time, Buddhism spread eastward to China and was protected by the imperial court. Buddhists worship the Buddha by carving rock temples.

The climate in Tianshui is suitable for human survival. This makes it the cradle of the Chinese nation. As we know, China's ancestors Fuxi and Nu Wa lived here. They created the early stage of China culture. Due to the suitable climate, there are many charming scenic spots here.