There is no direct bus. You can take the high-speed train from Shenzhen North Railway Station to huidong station (40 minutes ; Then there is a bus from high-speed railway station to xunliao bay, which runs every ten minutes. It is still very convenient.
If you go to the seaside at the end of January, it won&;t be very cold. ; Don&;t be cold. It It&;s too hot this winter. Everyone in Shenzhen should know. It didn&;t; It&;s not cold yet, and it shouldn&;t be. ; It won&;t be too cold during the new year.
I hope it helps ~ ~ ~