Answer:
Class 3B
Explanation:
The Class 3B laser products are well thought-out to be more harmful and relatively dangerous under straight and spectacular reflective viewing conditions. A Class 3B laser product, however, is on the whole not a fire hazard, diffuse reflection hazard or a laser generated air contaminant (LGAC) production hazard but could be hazardous when under mirror light reflection.
They did this so when the Mongols took over China, the Chinese could not gain high power and over throw the mongols.
“First stage” will be the answer you are looking for hope this helps
