Back to 60s as an educated youth

[No female protagonist + not cool text + plot flow + 1v1 + dual male protagonists] [straight men do not enter] Jiang He was reborn in the 60s. Because of the preference of his original parents, his original brother was originally sent to the countryside, but he was pushed by his eccentric parents. Go out as a substitute.But fortunately, his farming space also followed. Because of the doomsday rumors in his previous life, he used all his net worth to buy all the resources. He never imagined that the doomsday did not come, and he passed through...