This character name combines yun 雲 "cloud, clouds" and jiang 將 "military commander, general officer; (Chinese chess) general corresponding to (chess) king". English translators of the Zhuangzi have rendered Yun Jiang and Hong Meng as:
The name Yun Jiang is a combination of "yun" meaning cloud, clouds, and "jiang" meaning military commander or general officer; (Chinese chess) general corresponding to (chess) king.  English translators have rendered this as Yun Jiang and Hong Meng.