一点点天真
[yī diăn diăn tiān zhēn]
Means 'a bit innocent'. It shows the user considers him/herself to still carry some remnants of childhood naivety despite growing up, appreciating the good qualities that come from maintaining a childlike mindset in adulthood such as seeing the world through optimistic lenses and reacting more purely rather than cynically towards certain situations. Also, could express modesty about personal achievements and growth.