Indeed

事實上 /事实上

shìshíshàng

(modal: truly; in fact; actually)

實際上 /实际上

shíjìshàng

(modal: truly; in fact; actually)

的確 /的确

díquè

(modal: truly; in fact; actually)

確實 /确实

quèshí

(modal: truly; in fact; actually)

就是

jiùshì

(indication of agreement)

確實 /确实

quèshí

(indication of agreement)