It was also her best performance of the current season, but was still shy from her Asian record of 67.59m registered when winning the silver at the World Championships in London last summer.
Holding his nerve to outclass a strong field, Luvo Manyonga said he was relieved to secure a convincing victory after carrying the four-member South African contingent at the Diamond League meeting in Shanghai on Saturday.
Shaunae Miller-Uibo, The Bahamas' Olympic 400m champion, got her defence of the 200m title off to an eye-catching start as she defeated the world champion, Dafne Schippers, in a meeting record of 22.06.
And while Shi looked to have picked up an ankle injury with his final attempt, Manyonga stamped his authority on the contest with the world champion making sure by racking up a best effort of 8.56m in the last round. She went on to improve her mark to 66.85m in the third round and bowed out with a 66.26m to wrap up the victory, reports Xinhua news agency.
Chinese world champion Gong Lijiao showed her class in women's shot put with 19.99m to win in front of the delighted home crowd.
Danniel Thomas-Dodd of Jamaica took the silver at 18.70m and America's Raven Saunders finished third at 18.63m.
Olympic champion Brianna McNeal led a United States top four as she broke the 100m hurdles meeting record with a time of 12.50 from Sharika Nelvis' 12.52.
Forecast: Tornado watch issued as severe storms take aim
Mother's Day will see slightly higher temperatures as the high will be near 68 degrees with a slight chance of showers. While the forecast is long term, the weather service is calling for a return to the 80s by Friday .
Jamaica's world and Olympic 110m hurdles champion Omar McLeod completed a hat-trick of titles in Shanghai with a time of 13.16 - equalling the best run so far this season.
USA's Olympic champion Dalilah Muhammad won a close 400m hurdles race ahead of Janieve Russell, clocking 53.77 to the Jamaican's 53.78 PB.
Kinyamal compatriot Jonathan Kitilit finished second, 0.04 behind the fellow Kenyan as Marcin Lewandowksi from Poland claiming third place.
Elsewhere Briton Andrew Osagie finished seventh in the men's 800m in Shanghai, producing a time of 1:46.36.
Ethiopia's Birhanu Balew won the 5000m in 13:09.64 from USA's Paul Chelimo with 13:09.66.
Colombia's Olympic gold medallist Caterine Ibarguen easily won the women's triple jump with 14.80 metres.
In the men's pole vault, Canada's Shawn Barber finished fifth, clearing a height of 5.61m.