How do I reach the tureen?

Hint 1 of 5:

You did remember to practice for the mystery event, didn't you?

Hint 2 of 5:

Then you should know that the Pharts are very good at building a human
pyramid.

Hint 3 of 5:

That pyramid could probably even reach as high as the tureen.

Hint 4 of 5:

All you need to do is give them the proper signal.

Hint 5 of 5:

Try blowing on the whistle as you have done.