Toward the end of the Shanghai battle, the national army decided to make a detour in there advance. Jin Yuan-shuai was then ordered to guard the Si Hang warehouse that contained Japanese troops and to cover the main detour forces.

 The warehouse comprised two six-story buildings facing the public confession opposite Si Hang, Yangtze River.

 Commander Shang had only four hundredth soldiers to guard the warehouse.

 Japanese forces pushed forward along the Su Chow River looting everything along the way but they were unaware of the Chinese forces at the warehouses.

 When the Japanese move toward the warehouse they came under a surprise attack by the Chinese soldiers.

 The Japanese later made a strong counter attack on the forces and the fears fighting last 4 days and night.

 During a midnight battle, Girl Scout risks her life under intense gunfire to send a four-meter long national flag to the Si Hang warehouse.

 The next morning the national flag flew on top of the warehouse among heavy gunfire and flying Japanese flag giving Shanghai citizens great encouragement.

 Four days later as the aim of holding up the enemy had been reached the national forces accepted a cease-fire mitigated by British troops.

 When Commander Xie first moved to the warehouse the British troop asked him how many troops he had.

 In order to giver a stronger impression Xie answered with eight hundred people while he had actually had only four hundredth troops.

  The story later spread all over the public confession and everybody knew about the gallantly of the eight hundredth warriors who defended the Si Hang warehouse to the very last.