What should I prepare for a trip to Siem Reap, Cambodia?

Certificates and belongings: US dollar cash (small amount, preferably a stack of US dollar bills), passport (and two copies), air ticket and two copies, just in case, signature pen (used to fill out entry and exit forms), raiders, notebook (which is much more convenient for memorizing experiences, keeping accounts or bargaining), and three one-inch headshots, which can save the time of queuing for taking tickets for Angkor.

Digital category: electronic dictionary, camera, memory card and other photographic equipment, tripod (sunrise and sunset, night view of Angkor Wat temple), digital companion, 220 V voltage charger, battery.

Care: anti-mosquito liquid, camphor oil, electric mosquito-repellent incense, mosquito-repellent incense, toilet water and dust mask.

Cosmetics: strong sunscreen lotion, facial mask, daily cosmetics, hats, sunglasses and headscarves can all be bought locally.

Toilet supplies: toothpaste, toothbrush, towel, shampoo, shower gel, clothesline/rack, washing powder (laundry detergent), a little napkin, handkerchief, wet paper towel (very important, it is dusty in dry season, and you will sweat when climbing steep temple steps in any season), sanitary cotton.

Drugs: Ren Dan (heatstroke), Huoxiang Zhengqi, prickly heat powder, headache tablet antidiarrheal, carsickness medicine, band-aid, gastrointestinal medicine, quinine.

Clothing: Easy-to-wear sneakers/slippers (flip-flops are dangerous to climb steep slopes), pants suitable for climbing up and down, and coats are needed to watch the sunrise.

Others: plastic bags

Flashlights are used after sunset, and they are also used for lighting in the black holes of beng mealea and Tabulon.

rain gear

Snacks-eat in the car (things in other scenic spots are expensive and ordered less, so it's always good to prepare some)

Small gifts-stationery, old clothes, candy and biscuits (for local children) are better than giving money.

Telescope-when doing hot air balloon

cup