[jiè xiàn]
（分界） demarcation line; dividing line; limits; bounds; boundary; range; limitation
fix the limit
確定界限
overstep the boundary of freedom
超越自由的界限
break the bounds of different trades
打破行業界限
（限度） limit; end
Within the limitation you are free to do as you choose.
在這個界限內可任便。