First TIme

Take a look at one-minute-candle-stick chart of
6367 yesterday.

You will see how volatile that is at the beginning.

I first made 買建 at 9:10 after confirming the trend
broke the highest mark but it soon plunged.

At 9:16 I made 売建 while holding the 買建 at
the same time, hoping to find a stable trend in
one side or another.

It was the first time to have positions in both
directions like that.

At 9:27 I closed 買建, confirming \12.5k loss.

Ouch!

I hold on to the 売建 until 10 o’clock, confirming \12.1k gain.
What is the lesson here or how can I do it better?