开诚

to be honest / to show sincerity

to open / to start / to turn on / to boil / to write out (a prescription, check, invoice etc) / to operate (a vehicle) / carat (gold) / abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2] / abbr. for 開本|开本[kai1 ben3], book format

sincere / authentic / really / truly

lit. deal sincerely and fairly (idiom); frank and open-minded / plain speaking / Let's talk frankly and openly between ourselves. / to put one's cards on the table

variant of 開誠布公|开诚布公[kai1 cheng2 bu4 gong1]

candid and open (idiom)