Updated part3
Updated part3

Signed-off-by: Zhou Chang <e44db33ba4b93dbdc30674f3e64b79df8e3590ab@qq.com>

MyCountPrj/beginlearning,zhaoxiongwei/beginlearning,zhaoxiongwei/beginlearning,bssrdf/beginlearning,bssrdf/beginlearning,zhaoxiongwei/beginlearning,MyCountPrj/beginlearning,MyCountPrj/beginlearning,bssrdf/beginlearning,MyCountPrj/beginlearning,zhaoxiongwei/beginlearning,MyCountPrj/beginlearning,zhaoxiongwei/beginlearning,bssrdf/beginlearning,bssrdf/beginlearning