What is the conventional flower arrangement popular in Europe and America?

Conventional flower arrangement popular in Europe and America can be divided into formal flower arrangement and informal flower arrangement.

The form is (traditional flower arrangement), based on the arrangement and lines of flowers, and the non-form is (free flower arrangement), which advocates nature, does not stress form, cooperates with modern design and emphasizes color. Traditional style is suitable for special social occasions, and freestyle is suitable for daily home furnishings.