Participants: suitable for families with kids Registration: first-come, first-served Number of participants: 10 - 50 people Time: 1.45 - 3.00 pm / 3.00 - 4.15 pm Date: when the number of registered participants is more than 10, the date would be announced by the time. Venue: to be confirmed (If all participants know how to use ZOOM, the seminar can be arranged online, the Zoom link is to be arranged to participants before the seminar. We also welcome participants propose preferred date and venue.)