travel back in time

Yang Jun has always known that he is not a fashionable, luck is more general, crossing the street whether walking or riding in a car, a hundred times 99 times is a red light, the only green light that time is with a very lucky classmates together. Twenty-two years of life, the only time to catch up with the hair, and students together to climb the mountain camping; the only time the lucky draw in the lottery rolls all free. The consequences. He crossed over. He didn't travel to the other world or to the Han and Tang Dynasty, where all the travelers want to go. He traveled to the ancient times. He met a man as fierce as Tarzan. He was taught to build houses, to store food, to raise pheasants, to catch fish, to use all kinds of spices, to calculate time in the most scientific way, to count dates, and to farm! And then teach him how to do that and that and that, and the saddest thing is that and that and that.