Complex sentence: For professionals in this position, it is helpful to be familiar with the appearance of "Gua Sha" marks and to understand its traditional therapeutic value, and to be able to make the distinction between "gua sha" marks and signs of abuse.
Split into simpler sentences: For professionals in this position, it is helpful to be familiar with the appearance of "Gua Sha" marks and to understand its traditional therapeutic value. It is helpful to be able to make the distinction between "gua sha" marks and signs of abuse.