Handheld hookah

A hookah, comprising a gas valve assembly comprising a gas valve and a central shaft;

• wherein:
• the gas valve comprises a first air duct and a second air duct;
• the central shaft comprises a third air duct and a fourth air duct;
• the first air duct and the second air duct each comprises a first end and a second end;
• when in use, the handheld hookah is placed vertically and added with water, a liquid level of the water is lower than that of the first end of the second air duct, but higher than that of the second end of the first air duct;
• the first end of the first air duct is connected to the third air duct so that smoke goes into the first air duct from the third air duct;
• the second end of the first air duct is disposed in the water so that the smoke is filtered through the water;
• the first end of the second air duct is disposed above the liquid level of the water so that the filtered smoke enters the second air duct;
• and
• the second end of the second air duct is connected to the fourth air duct through which the smoke is discharged to a cigarette holder for user's inhaling.