1
00:00:00,166 --> 00:00:02,683
Arms enter the water simultaneously, forming a Y shape.

2
00:00:03,350 --> 00:00:04,283
Butterfly stroke?

3
00:00:05,750 --> 00:00:07,383
Why not start from the basics?

4
00:00:08,183 --> 00:00:10,000
Leg movement should be like a dolphin's.

5
00:00:10,383 --> 00:00:12,449
Use the waist as the core, keep the legs together.