[jiè xiàn]
（分界） demarcation line; dividing line; limits; bounds; boundary; range; limitation
fix the limit
确定界限
overstep the boundary of freedom
超越自由的界限
break the bounds of different trades
打破行业界限
（限度） limit; end
Within the limitation you are free to do as you choose.
在这个界限内可任便。