Cai Xiyong said he referred not Graham system but Lindsley. But consonants of his system seem to refer Pitman family.
Comparing Takusari , Cai Xiyong with Pitman,Graham and Lindsley, there are correlation observed among Pitman, Graham , Takusari and Cai Xiyong, but Lindsley is isolated in consonants.
But Takusari and Cai Xiyong adopted consecutive writing in Vowel not positioning by Pitman and Graham.
It is better for Japanese, Vowel has an important role in words, and therefore Takusari did not adopted Positioning vowels.