you may find 1 icon like 鎖鏈 at the top when you input/ edit the your post. Procedures as follows:
1. copy the url link of your designated post, eg, there is a map in post 30, you may point to word "#30" at the right hand corner side of post 30 and copy the url link.
2.back to your post #1, click edit
3.type your word first, e.g "地圖"
4.then highlight the word "地圖" with right click of mouse
5.then click 鎖鏈 icon
6.paste the url link of post #30 to the box and click提交 and 保存.
7. now you may go to post 30 directly by clicking the word "地圖" at post 1.