@thanhthuyento,
1. I want to add entry point(buy, sell) to chart or stock chart.
You can achieve this by using a line chart with just two dataPoints(one indicating entry point while the other indicates exit point).
2. I want something like tradingview chart: draw line,..
You can achieve this requirement by using StripLines over AxisY.
Considering this thread as a duplicate of Add custom point and line to chart and hence closing the same.
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Shashi Ranjan
Team CanvasJS