Correct

纵情

/ zòngqíng / 
Strokes

Definition

to your heart's content

Example

As an Adverb

to one's heart's content; as much as one likes

1
Zòngqíng
纵情
xiǎngyòng
享用

indulge oneself with/on sth

2
Zòngqíng
纵情
xiǎnglè
享乐

indulge/glut oneself with pleasure

3
Zòngqíng
纵情
gēchàng
歌唱

sing to one's heart's content; sing heartily

4
Zòngqíng
纵情
de
的
dàxiào
大笑

hearty laugh