Corner reflecting device and corner reflecting system

A corner reflecting device comprising:

• at least one corner reflector, having:
• a first right triangle plate;
• a second right triangle plate, a shape thereof being the same as a shape of the first right triangle plate, one long leg of the second right triangle plate being connected with one long leg of the first right triangle plate;
• and
• a first isosceles right triangle plate, two legs thereof being connected with a short leg of the first right triangle plate and a short leg of the second right triangle plate respectively;
• wherein neither the first right triangle plate nor the second right triangle plate is an isosceles right triangle plate, an intersection of the long leg of the first right triangle plate, the long leg of the second right triangle plate, the short leg of the first right triangle plate, the short leg of the second right triangle plate, and the two legs of the first isosceles right triangle plate forming a leak hole.