ield per mu of land can easily exceed five hundred kilograms, almost double that of wheat or corn."Li Chen's eyes sparkled with extreme excitement as he said to Liu Sichun, "Now, do you know why I was... thought, was pacing back and forth outside the East Palace gate when it creaked open.Emerging from within was none other than the tightly-furrowed brow of Dantai Jing.The old gentleman's furrowed bro...