Why did chinese believe the tang struggled with crop failures and government problems?

During the latter part of the 9th century, the Tang Dynasty was confronting numerous challenges regarding public administration and natural disasters. After a disastrous flood in 858 which caused many casualties and a failed harvest in 873, the Chinese people began to believe that it was a "Mandate of Heaven" that the Tang Dynasty should come to an end.

the following best describes postwar era writers in their works:

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.

one central belief of buddhism is often referred to as reincarnation -- the concept that people are reborn after dying. buddhism is a philosophy of life expounded by gautama buddha ("buddha" means "enlightened one"), who lived and taught in northern india in the 6th century b.c.