zuò / shēng / yì / jiǎng / jiū / nǐ / qíng / wǒ / yuàn / bù / néng / qiáng / mǎi / qiáng / mài

做生意讲究你情我愿，不能强买强卖。

Business transactions are based on mutual willingness, and you can't force people to buy or sell.