* * * Public places: such as parks, libraries and airports. These places usually provide empty seats to rest.

* Trains and planes: Trains and planes are spacious, with large space and long hours. Sleeping on the train or plane is also a good choice.

* Friend's house: If you need to spend the night outside, you can choose to go to a friend's house and stay at a friend's house.

* Shelter: Some charities and volunteer organizations also provide free sleeping places, where you can get a safe sleep.

* Hotel: If you want to spend the night in a safe and comfortable environment, you can choose to book a hotel room.

* Coffee shop: Some coffee shops allow customers to order a cup of coffee, then sit in the shop and take a nap.

Please note that sleeping in public places may have safety problems. Please be sure to choose a safe environment.