长袖善舞 chángxiù-shànwǔ

[long sleeves help one to dance skilfully, it shows person with money and power could do things easily] 穿着长袖子的衣服才好翩翩起舞。比喻有所凭借,事情就容易成功。也用以形容有权有钱有手腕的人什么都好办

长袖善舞,多资善贾。——《韩非子·五蠹》