How did 3dmax import the model? This is a model file of a sailing hotel on the Internet.

When importing models, units, attachment drawings, cameras, etc. Should be set. In particular, the units must be consistent, whether it is English or metric, and they must be checked before they can be transferred to the drawing file according to the confirmation. Most of the above situations are the reasons for poor unit setting. Try again. Otherwise, import C4D software first and let it transfer files automatically. After the file is converted, check the size unit it uses, then choose the appropriate extension, and then export the file. Re-import this drawing file using 3DMax. Remember, the unit settings should be the same. At this point, you should be able to successfully convert it into the drawing file you want.