<human>:  Why did the Japanese lose the Battle of Nanjing?
<bot>: The Japanese were outnumbered by the Chinese. The Japanese had a lot of soldiers, but the Chinese had a lot of soldiers too. The Chinese had a lot of tanks and planes, and they were able to use them to their advantage. The Chinese also had a lot of artillery, and they were able to use it to their advantage. The Chinese also had a lot of soldiers, and they were able to use them to their advantage.