Time-domain astronomy is a forefront and active research area in astronomy. Thanks to various sky survey projects, including the current Zwicky Transient Facility (ZTF) and upcoming Large Synoptic Survey Telescope (LSST), we are in the golden age of time-domain astronomy. In our Phase-II Project, we will harvest the full 3 years of ZTF time series data, together with follow-up observations from Lulin Observatory, to carry out research in variable stars. We will also join and be prepared for the LSST in coming years. Several research projects that will be carried out in our Phase-II Project include, but not limited to, variability of Be stars, period-luminosity-metallicity relations for RR Lyrae in gri filters, investigation of Blazhko RR Lyrae with ZTF, variable stars research in Galactic Plane, study of Miras light curves, and lucky image observations on the Lulin Observatory. Students training is also a very important goal in our Phase-II Project, and a number of these research projects will be lead by graduate students. Through these research projects, students can be trained in the study of time-domain astronomy, and master skills such as machine learning, statistics, programming and database that are important and valuable for their future careers.