2. Draw the outline of a soldier digging a tunnel.
3. Draw a line of action on the back of the soldier who is ready to leave.
4. Draw the back line of the second soldier who is going to walk out of the tunnel with his legs raised.
5. Draw the action outline lines of the female warrior who wants to drill the tunnel.
6. Draw the facial expression lines of the soldiers who are still in the tunnel. Write vertical characters on the right side of the picture to complete the stick figure of tunnel warfare in central Hebei.
Tunnel warfare is a way of fighting against Japanese invaders in North China and Jizhong Plain during the period of China and War of Resistance against Japanese Aggression.
The tactics of tunnel warfare began to develop continuously from Ran Zhuang in Qingyuan, Baoding, Shanxi-Chahar-Hebei Border Region, and developed from a single hiding place to underground fortifications that can be used to fight and hide, waterproof, fireproof and antivirus, and gradually formed the tactics of joint house, internal and external defense and coordinated attack on the enemy.
Tunnel warfare has made the unsuspecting Jizhong Plain an important battle area for China soldiers and civilians to fight against the Japanese aggressors.