Expanding squares ..

Black and yellow , this is my expanding squares . It might look simple and easy , but it took my few hours to finished it and it has a meaning . The reason i used yellow it is because yellow is bright like a sun . Is just like the sun shinning on the land and bright the earth ... The first square is showed that the light shines on something .. the wave getting smaller and sharp . The second square is just like the ground , the sun is going to shines on it . The square expanded bigger , expanded to two to showed that the square is expanding and is just like the lights shines on everywhere . The third square is reducing , is just like comes to the evening , the sun is going down .. and the lights is getting no more and no more . The last square , the sun gone .. Comes to night , and the stars rising to the sky and hanging on the sky .. So i did it with a tiny squares like hanging and did it seperately , is just like stars blinking in the sky . I used that square and cut it into pieces .