Home backyard is found to contain oil, how should the oil be extracted?

The backyard of the home is found to contain oil, how should the oil be extracted?

How to play:

The game is very simple, just connect the pipelines underground to the pipeslinesabove ground in order to let the oil flow through.

1. There are 4 types of maps sizes accordingly: 3x5, 5x7, 7x9, 9x11 squares

2. There are in total 10 types of pipelines for assembly

3. Avoid aligning the pipelines exits with bombs. If the oils comes into contact with the bomb, it will ignite and detonate

4. All pipelines must be connected to the main oil pipe

5. Moving the pipeline is very simple, just select the pipeline you want to move on the map, then click on the designated location on the map to move

6. Any pipeline with locks are not able to be moved and can only be connected with other pipeline

Scoring method:

1. Complete the pipeline within 1 minute to get 3 stars

2. Complete the pipeline within 2 minutes to get 2 stars

3. Complete the pipeline within 3 minutes to get 1 star

4. No stars will be obtained after 4 minutes