In the Zombie Apocalypse in North America, I Am the Most Ruthless Person

[Easy and funny + single female protagonist + system + pure zombies + farming + daily life] "Who else can ride a pig and kill zombies besides me?" "How about changing the head of household in North America this time?" "Who supports? Who opposes?" "If you object, go and sit at the same table with zombies!" "We, Mr. Dong, must completely become the masters of this land!" "How do you call yourself Master Dong?" "The first step to becoming a Dongda native: first use Mandarin and recite the 99 multiplication table for me." "What? You can't recite the multiplication table? How is that different from a zombie?" The global zombie virus broke out, and the North American region was completely destroyed. Lin Hao returned with the system and was reborn.