“Often” in Chinese is 时时 (shíshí).
Not to be confused with: 逝世 (shìshì, to pass away) · 事实 (shìshí, fact) · 适时 (shìshí, timely) · 时事 (shíshì, current trends; the present situation; how things are going) · 实施 (shíshī, to implement)