blind people touch an elephant (idiom, from Nirvana sutra 大般涅盘经 ); fig. unable to see the big picture; to mistake the part for the whole; unable to see the wood for the trees
Since "The Record of Travelling to West" has been published, has many kinds of ground theories to its primary intention, but the rare main point of all draw conclusions from incomplete information.
The small force will forego the movement to contact (an operation designed for blind men trying to figure out the elephant) in favor of high-speed, destructive raids.