https://hermeneutics.stackexchange.com/questions/75353/how-was-the-20-tax-enough-to-last-all-7-years-of-famine(http://www.autoadmit.com/thread.php?thread_id=5898153&forum_id=2锞兾告触锟界锟絇HPSESSID=962c303388ae8b5678383d002493727e#50098322)