On Rulelessness of Ode's Style Character and Polarizing of Tang Ode's Form

Ode is a kind of style between poem and articl.However,what is ode? No certain key.Ode's style character is essentially ruleless.So the subject is taken as the criterion to judge if a piece of writing is ode or not.Because of the rulelessness of ode,Ode encountered the situation of polarization in Tang dynasty.On the one hand,the rule was strengthened.On the other hand,the rule was weakened.The former took rhythm ode as representation.The latter resulted in Ode's no literary character.