it's known to all that ,sometimes higher version is far more slow than low version
this is a example.
```mathematica
Clear["Global`*"]; Plot[Sin[x], {x, 0, 5}] // AbsoluteTiming
```
on my computer
[![enter image description here][1]][1]
[![enter image description here][2]][2]
So is there a way to use low version in high version?
The reason why I don't use low version directly is that high version has more functions,which is more convenient.
**thx to the link in the comment.I find this.**
https://stackoverflow.com/questions/4983301/executing-code-in-v-5-2-kernel-from-within-v-7-01-session-through-mathlink
[1]: https://i.sstatic.net/NN2jS.png
[2]: https://i.sstatic.net/Ncql3.png