If you climb Dajianshan (especially suitable for people who have worked), you can come back in about half a day. You can go alone if you like. There are more people in Dajianshan than Wugui Mountain, and there are some restaurants (I haven't eaten them, so I can take money with me if I find it troublesome to bring things, and rest at the foot of the mountain after climbing). Besides, if anything, you have a good chance of getting passers-by. If you have any questions, you can ask the shops nearby.
It is suggested that if you climb Wugui Mountain, it is safer not to go alone. Even if nothing bad happens to you, take them into account before you go. If you are not afraid of 10 thousand, you are afraid of 10 thousand. If you are fully prepared, you will have a good time. You can also go to Dajianshan first, and then go to Wugui Mountain with your friends.