I went to Tamsui who said I could do the "HHR " move-out using this paper form. Which i have to submit to the HHR office. I will also submit a copy of my plane ticket, but I think it is not required.
They also said I could not estimate a date of exit. I need to submit the exact form.
One of the images is a second method, if my household person submits a different thing. I don’t read chinese so don’t know what it is.