The day before yesterday my sister’s birthday, had to go to the playground to play, so we all had to accompany her to play. But I don’t like playing these, some of the more horrible and I can’t stand, but I am curious about playground equipment, also is the playground design things, because just a friend is engaged in building facilities, often told me about these things. Playground equipment should be better than the ordinary things a bit more difficult, because it is necessary to consider the playability, and the most important security issues. Playground equipment is a very challenging job. I am very interested in this, but the university time to learn not to turn professional, but never mind, as a hobby is a good.