Ok for self Multiply, you need this line on stres:
STR_STDDB_MONSTERHUMAN:虚像
and this line in mon db:
虚像 237 19 95 56 0 0 0 0 0 1 500 0 10 10 22 0 0 0 0 0 0 0 0 0 0 150 250 0 0 0 0 0 0 0 0 0 Samurai 0 1 1 1 1 5 3 0 0 0 0 0
For riding the horse using M, you need this in stres. I've put the lines for resting pets and changing attack mod so CTRL & H and CTRL & A work properly for you as well:
STR_USERCMD_ATTACKMODE:攻击方式
STR_USERCMD_HIDEHORSE:包马
STR_USERCMD_RIDEHORSE:骑马
STR_USERCMD_CALLHORSE:下马
STR_USERCMD_SLAVEMODE:休息