lǎobǎn bào yí gè jià, nǐ jiēzhù, qīngqīng tuī huíqù; lǎobǎn zài tuī huílái, nǐ kàn néng bu néng jiē

老板报一个价，你接住，轻轻推回去；老板再推回来，你看能不能接。

The shopkeeper quotes a price, you take it and gently push back; when they push it back again, you see if you can accept it.