leaves seem rather small, but the petiole is long and thick. This large root system... Could it be a sweet potato"Liu Sichun's words made Li Chen's eyes light up."Have you seen"Liu Sichun did not dare...e places. Such tireless effort, is it all for the sake of teaching and educating students" Li Chen asked.Mr. Mirror was not surprised that Li Chen could see this. He said, “That’s right, my greatest i...