The 34-year-old, competing in the F11 class for athletes with visual impairment, lined up on the runaway still wearing his training trousers before whipping them off just before he started his run-up each time.
It brought cheers of delight every time from the crowd, who then had to quickly fall silent, with the event demanding quiet to enable the athletes to hear the instructions of their guides on take-off.
There was a silver lining for Li, who finished in second place, behind eventual champion Denis Gulin of Russia - who produced a strong performance to take the gold.
Gulin launched himself out to 12.91m, with Li's longest jump 12.75m and Ukraine's Ruslan Katyshev, the Long Jump champion, taking bronze with a personal-best leap of 12.50.
Aside from Li, there was more Chinese medal success this morning as Mi Na won her second gold of the Games by leading a one-two in the Discus - F37.
Mi threw a world record 35.35m to beat compatriot Xu Qiuping into silver, with Great Britain's Beverley Jones getting bronze.
Mi smashed the world record with her very first throw and said: 'I thought about it before the event, but I wasn't really expecting it in my first throw.
'The first throw of 35.35m was a great result.'
And Wang Zhiming's victory and world record in the Shot Put - F40 further emphasised China's status as the dominant force in Paralympic Athletics.
The 20-year-old threw 14.46m to see off the challenges of silver medallist Hocine Gherzouli of Algeria and Paschalis Stathelakos of Greece, who took bronze.
Algeria's Mohamed Berrahal won the Discus - F51/52/53 with a world record of 12.37m.
That worked out at 1093 points as he finished ahead of silver medallist Aigars Apinis of Latvia with Tunisian Mohamed Zemzemi taking bronze.