On one occasion, sima guang with friends to play in the backyard. The yard has a large water tanks, have a baby climb to the cylinder on the play, accidentally, fell into the tank factory. Large cylinder depth, saw the child was heavily silted. The accident happened to the other children saw, scared to cry while shouted, ran to the outside to adults for help. Sima guang has used his quick wits, picked up a big stone from the ground, his strength to the tank go, "bang!" Out of the tank is broken, the water flow in the cylinder, submerged in the water of the child is saved. Small sima guang, a calm demeanor, since the childhood is a pair of grownup look like. This is a story circulates "sima guang hit a cylinder".
有一次，司馬光跟小伙伴們在后院里玩耍。院子里有一口大水缸，有個小孩爬到缸沿上玩，一不小心，掉到缸廠里。缸大水深，眼看那孩子快要沒頂了。別的孩子們一見出了事，嚇得邊哭邊喊，跑到外面向大人求救。司馬光卻急中生智，從地上撿起一塊大石頭，使勁向水缸砸去，"砰!"水缸破了，缸里的水流了出來，被淹在水里的小孩也得救了。小小的司馬光遇事沉著冷靜，從小就是一副小大人模樣。這就是流傳至今"司馬光砸缸"的故事。
有一次，司馬光跟小伙伴們在后院里玩耍。院子里有一口大水缸，有個小孩爬到缸沿上玩，一不小心，掉到缸廠里。缸大水深，眼看那孩子快要沒頂了。別的孩子們一見出了事，嚇得邊哭邊喊，跑到外面向大人求救。司馬光卻急中生智，從地上撿起一塊大石頭，使勁向水缸砸去，"砰!"水缸破了，缸里的水流了出來，被淹在水里的小孩也得救了。小小的司馬光遇事沉著冷靜，從小就是一副小大人模樣。這就是流傳至今"司馬光砸缸"的故事。