There are three places to recommend for a one-day picnic:
1- Maluanshan Wilderness Suburb Garden
The mountain is not high, and it can reach the top in ten minutes. The environment on the mountain is primitive, with streams and waterfalls.
2- Yangmeikeng Valley Valley
Go to Luzui Mountain Villa, suitable for self-driving/cycling/car rental/speedboat. The water quality is very clean, so you can go to the seaside or barbecue and camp at night.
3- Shenzhen Bay Park
It S suitable for going at night, watching seabirds and blowing sea breeze. The grass is wide and cool, so you can bring your own picnic mat.