I'm a lol novice, and I've just been exposed to this game for over a month at most. I want to ask you a question. There is a kind of visual equipment in this game.

Four kinds, 1 true guards, can see invisible units, and have the largest field of vision. There is no time limit, only five minutes of life. Everyone can only have one real eye on the map. Some areas can be monitored by purchasing equipment such as eye stones, and the duration is 150 seconds. 3 yellow surveillance guards, obtained by purchasing yellow ornaments, last for 60- 120 seconds before level 9, and upgrade advanced yellow ornaments for 180 seconds after level 9. All surveillance guards can only exist three at the same time on the map. Four divination balls (ornaments) dispel the fog of war in an area for 2 seconds. Similar to the summoner's skill insight, but the available range is too small compared with the display area. The divination ball (ornament) unveiled the fog of war. If an enemy hero is found, he will remain visible for 5 seconds. (120 second cooling time) The use range of the Divination Ball (level 9) has been increased from 2,500 yards to 3,500 yards. (120s cooling time) Yuan Jianbaozhu (Grade 9 +475g) has a usable range of 4000 yards. (90-second cooling time) Insight exposes the field of vision anywhere on the map for 6 seconds. The cooling time is not clear. It didn't take long, anyway, it was less than 50 seconds, and the exposure range was particularly large. Most companies want to adopt it.