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As childrens toys,soap bubbles also underpin many important scientific questions.What is the most efficient structure for foam?-the "Kelvin problem," has been one of the most intriguing science and widely discussed over the past hundred years.Soap bubbles frameworks have similar topology with sp3-bonded carbon or silicon allotropes,e.g.,Weaire-Phelan foam and superconducting clathrate Na8Si46.