管窺所及

in my humble opinion

variant of 管[guan3]

surname Guan

to take care (of) / to control / to manage / to be in charge of / to look after / to run / to care about / tube / pipe / woodwind / classifier for tube-shaped objects / particle similar to 把[ba3] in 管...叫 constructions / writing brush / (coll.) to / towards

to look at sth through a bamboo tube / to have a restricted view

to peep / to pry into

actually / place / classifier for houses, small buildings, institutions etc / that which / particle introducing a relative clause or passive / CL:個|个[ge4]

and / to reach / up to / in time for