charm offensive
noun
- a campaign of flattery, friendliness, and cajolement designed to achieve the support or agreement of others魅力攻势（以阿谀、友善和哄骗来赢得他人支持或首肯）：
he launched a charm offensive against MPs who didn't support the government.
他对不支持政府的下院议员们发起了魅力攻势。