If you don't know that, interpretation can go far astray.

如果你不懂这点，对它的解读就会误入歧途。

youdao

Thus only with the guide of the boxing theory can people find the correct exercise method but not go so far as to be led astray.

因此练拳须明理，只有在拳理指导下，才能找到正确的练习方法，以免误入歧途。

youdao