was performed in Beijing, the capital of China, this year.
Now, PM 2.5 which is an air-pollution substance
is regarded as questionable in China.
The numerical value of concentration of contaminant
is the already worst level.
This race was performed under the worst condition.
Under this condition,
a sick person may come out into the player who participates.
In fact, the players to whom the convention gave up the game
in the middle of the race now occurred one after another.
He will also surely worsen the body at this situation !
