享有“吃瓜自由”的我们一起来认识一下这位已经91岁高龄的“瓜奶奶”吴明珠吧。 September 23th marks the fourthChinese Farmers' 1)Harvest Festival.Students 2)honored the memory of thebeloved "father of hybrid rice." On thisspecial day, there is also a grandmotherwho has devoted her whole life to ...