Then enter the game and open a single room first. After loading the world, press ESC to open the menu, and then click Create LAN World. At this time, a sentence will pop up in the lower left corner: the local game has been opened on the port XXXXX, write down the port number he displays, which is this string of 5 digits.
Then let your friends enter the game, click the multiplayer game, then click the direct connection, enter the IP address just written down, add a colon ":"after the IP address, and then enter the 5-digit port number.
Redstone components and some blocks can be charged or discharged. If a square is "charged", it can be used as a power supply, and this power supply may supply power to the adjacent "electric" square to make it work.
"Adjacent" is defined as follows: a square is a cube, and a cube has six faces. In other words, any face of a square may have at most six squares in contact, which is called "a square adjacent to a square".
When an opaque square (such as stone, sand, mud, etc.) is one of the upper, lower, left, right, front and back surfaces. ) is adjacent to the activated power supply (it will not be charged when there is a repeater or comparator below), and we call this square strong charging (this concept is different from the charging level).