Despite Ashina Simo's royal lineage, it was said that on account of his appearance, which appeared more Sogdian than Tujue, Ashina Duojishi and Ashina Chuluo both suspected him of being born out of an adulterous relationship, and therefore did not entrust him with great authorities.
Meskipun garis keturunan Ashina Simo, dikatakan bahwa karena penampilannya, yang muncul lebih Sogdiana dari Tujue, Ashina Duojishi dan Ashina Chuluo keduanya mencurigainya lahir dari hubungan perzinahan, dan karena itu tidak mempercayakan dia dengan otoritas yang besar.