Teachers in Weifang City, Shandong province, pulled the children away as the man died, the spokesman said.

CNN: Schools in China prepare for copycat attacks

Weifang has a population of a million and it is developing fast.

BBC: Taking on China's corruption

In 1943 he was interned at Weifang and he died of a brain tumour just months before the end of World War II, at the age of 43.

BBC: Chariots of Fire's Eric Liddell is Chinese 'hero'

The Weifang local government in April helped Shandong Helon Co.

WSJ: Faith in Bailouts Spurs China