勿梶
[wù wĕi]
'Wu Jie', where '勿' has the meaning of 'no' or 'don't'. And '梶' is an ancient Chinese word which means to hit somebody using fists; so this could be interpreted as a plea for peace or to discourage hostility. However, '梶' is also homophonous with some words meaning hard/indomitable which might convey strength.