It is a budhist religious movement formed in 1939 by the budhist reformer Huynh Phu So.
it gained great popularity in the fertile mekong delta area.
Huynh Phu So's critisism against useless expenditure had a wide appeal.
he also opposed the sale of child brides , gampling n use of alcohol.
the french put him in mental asylum.
but the doctr who had to prove him insane became his foloower in 1941.n evn the french doctrs said he was sane.
thn...the frnch doctrs exiled him to laos n snt many of his followers to concentration camps.
hope it helped u :)