I find the following reference to the Shanghai Kingai-noon intriguing as I am not acquainted with the style.
The quotation refers to Shinko Matayoshi (1886-1947), the founder of the Matayoshi kobudo line who was an avid preservationist and student of Chinese weapons.
Prior to 1934, Matayoshi "next travelled to Shanghai where he learned ... herbal medicine, acupuncture and a form of Shaolin Temple boxing known as Kingai-noon that is considered to be a sister style of Kanbun Uechi's Pangai-noon, as they both have the same Sesan (Bishop's spelling) kata and differ in name only by the first Chinese character. Before finally returning to Okinawa in 1934, Matayoshi learned another form of Shaolin at Fuchou.
Matayoshi was also a student of the Chinese tea merchant Gokenki who while residing in Naha, Okinawa taught the white crane style of kung-fu. It was at this same period that Uechi Kanbun Sensei was still in seclusion but meeting regularly with Gokenki. According to the Kyhon, Gokenki knew Shushiwa and trained with him periodically on his regular visits to his home city of Fuchow. Gokenki and Uechi again according to the Kyhon examined at length white crane hand techniques.
Through Gokenki Uechi Kanbun was able to maintain at a distance a relationship with his teacher, Shushiwa, and work on key techniques of the Uechi San Sei Ryu and possibly parts of the Fuchow Suparimpei.
It would be interesting to explore any possible relationship between Kingai-noon and the Fuchow Suparimpei.