What is the official position of the Tang Dynasty equivalent to?

In the early Sui and Tang Dynasties, Ren Zhongshu was appointed as the governor of Zhongshu Province, which belonged to the post of prime minister. Tang Gaozong was changed to the right phase. Wu Zetian changed the order of Chinese books to "internal history" and the provinces of Chinese books to "Fengge". At the beginning of Xuanzong Kaiyuan, it was changed to Ziweiling, and at the beginning of Tianbao, it was changed to the right. After all, it is restored. In the early Tang Dynasty, China's calligraphy ranked third, and its position was superior to that of middle. In the second year of Dali, it was promoted to the second grade. In the late Tang dynasty, the assistant ministers of the two provinces were prime ministers, and the governors of the two provinces held high positions and did not worship often. Or use it to add a title to the commander of the military region of the buffer region without pre-politics. After the death of Feng Dao in the first year of virtue at the weekend, the secretariat no longer really worshipped him.

Therefore, in the Tang Dynasty, the level of secretariat was different, and in the process of change, it was roughly equivalent to serving as prime minister, deputy prime minister and state councilor respectively.