A self-styled Chinese inventor
tests his homemade helicoptor next to his apartment in Beijing June
25, 2003. Yu Jun follows in the footsteps of his younger brother
who lost his life in a national park in central China at the end of
a 20 year search for the legendary "Bigfoot", and intends to
continue the quest from the sky. Without any formal education in
aerospace science, Yu Jun spent five years constructing the
helicopter from spare parts belonging to a dilapidated "Lada"
automobile (in back).

Han Yuzi, 63, inventor, holds up
one of his creations, a hair comb that doubles as a small hand-held
musical instrument, in Guangzhou, the capital of China's Guangdong
province, September 13, 2003.

A woman rides an unicycle at a
park in Shanghai February 28, 2004. The unicycle was designed by
Chinese inventor Li Yongli who called it "the number one vehicle in
the world."

Chinese shipbuilders stand on a
submarine designed by a farmer Li Yuming (not pictured) on the
Yangtse River in Wuhan, central China's Hubei province in this
picture taken September 24, 2005. The submarine, 9.8 meters long,
two meters wide, and four meters high, was built by some ten
shipbuilders in seven months. Maritime Administration of the
Yangtse River banned the submarine's trial voyage because it did
not undertake any navigational procedure.

Zhao Xiuguo drives a homemade
model of Formula One car in Tangshan, Hebei Province, some 180km
(113 miles) east of Beijing July 21, 2006. Zhao Xiuguo and his
brother Zhao Xiushun built the car from scrap metal and said that
they wanted to design and build the first Formula One racecar in
China.

Tao Xiangli stands beside his
homemade submarine in a courtyard in Beijing July 10, 2008. The
amateur inventor says his submarine is made from old oil barrels
but fully functional with a periscope, depth control tanks,
electric motors and two propellers.

Farmer Wu Yulu drives his
rickshaw pulled by a his self-made walking robot near his home in a
village at the outskirts of Beijing January 8,
2009.

Wu Zhongyuan, 22, a local farmer,
turns the wooden rotor blades of his self-made helicopter in
preparation for its maiden flight, in Jiuxian county, Henan
province, China, August 1, 2009. The local government later halted
Wu's flight out of safety concerns. The aircraft, powered by a
150cc engine, took Wu two months to build and cost more than 10,000
yuan ($1,460), China Daily reported.

A self-styled Chinese inventor
tests his homemade helicoptor next to his apartment in Beijing June
25, 2003. Yu Jun follows in the footsteps of his younger brother
who lost his life in a national park in central China at the end of
a 20 year search for the legendary "Bigfoot", and intends to
continue the quest from the sky. Without any formal education in
aerospace science, Yu Jun spent five years constructing the
helicopter from spare parts belonging to a dilapidated "Lada"
automobile (in back).
Tao Xiangli gets out of his
homemade submarine after operating it in a lake on the outskirts of
Beijing September 3, 2009. Amateur inventor Tao, 34, made a fully
functional submarine, which has a periscope, depth control tanks,
electric motors, manometer, and two propellers, from old oil
barrels and tools which he bought at a second-hand market. He took
2 years to invent and test the submarine which costs 30,000 yuan
($4,385).

Chinese farmer Yang Youde pushes
his homemade cannon near his farmland on the outskirts of Wuhan,
Hubei province, China, June 6, 2010. Yang's cannon, which is made
out of a wheelbarrow, pipes and firing rockets, is used to defend
his fields against property developers who wants his
land
