How to clean the engine compartment of a car?

The cleaning method of automobile engine compartment is as follows:

1. Spray foam cleaner where there is too much sludge, and wipe off the residual foam on the engine with a rag.

2. Spray water evenly on the engine compartment with a watering can, clean the water on the engine with a rag, wipe the precise and meticulous parts, and wait to dry.

3. Tips: Be careful when cleaning the engine compartment and wear rubber gloves to avoid scratches.