Correct

圆浑

/ yuán hún / 
Strokes

Example

As an Adjective

(of voice) round and mellow

1
Zhè
这
duàn
段
chàngqiāng
唱腔
liúchàng
流畅
ér
而
yuánhún
圆浑
  
。

This aria is soft and melodious.

As an Adjective

(of art, poetry, etc) natural and spontaneous