Introduction to the Warning Bell: The Warning Bell weighs about 1.5 tons. The size and decoration of each part of the bell body have specific symbolic meanings: the dragon-shaped hanging loop on the top of the bell is 193.7mm high, which means that the Japanese invaders landed at In 1937; the net height of the bell body is 1105mm, which means November 5th, the date when the Japanese invaders landed in China; the diameter of the bell mouth is 1015mm, which means 1015 villagers were killed in the Jinshanwei coastal area. The 55 white magnolia patterns on the upper part of the bell body and the small seal character "ji" in the pattern symbolize that the 550,000 Jinshan people in Shanghai will always remember history.