During the Sui and Tang Dynasties, what Buddhist classics were written to promote sectarian teachings?

The earliest Tiantai Sect was founded by Zhijian Tiantai Mountain. Hokkekyo is the main classic of this school, so it is also called Fahuazong. Hokkekyo, also known as the Lotus Sutra, is the theoretical basis for Tiantai Sect to multiply three times conveniently and double truly, so that all beings can become Buddhas. Zhijia wrote 20 volumes of Fa Hua Xuan Yi and 20 volumes of Fa Wen Hua Sentences for the northern religion, and also wrote Moho Intuition according to the thought of the northern religion, and put forward the basic theories of Tiantai Sect, such as "one thought is three thousand" and "three truths are one".