Apps ≫ Two Tomorrows Born from Water

1. Prepare the materials and place them on the table (beaker with water, sodium hydroxide bottle, stirring rod, spoon)
2. Add a small spoonful of sodium hydroxide (electrolyte) into the beaker of water
3. Stir well with the rod to dissolve the sodium hydroxide
4. Pour the dissolved sodium hydroxide solution into the water electrolysis device
5. Place the water electrolysis device in its designated position
6. Press the power button to operate the water electrolysis device
7. Observe the process of water being electrolyzed
8. Press the button to collect hydrogen, charge the battery, and power the car
9. Press the button to collect oxygen and supply it to the tree

The car charged with hydrogen can now be controlled using a joystick. The tree supplied with oxygen grows vibrantly.