Time to start accumulating stocks slowly

Based on my experience, some of the stocks in the stock market has reached its lowest point this year. While we cannot deny the stock price is moving south, I believe that it is time to start accumulating good company with more reasonable price. There are three strategies now:

1. Buy into High Dividend Yield Stock. The cheaper the price is, the higher the dividend yield is. Please make sure the company can distribute dividend in consistent manner. 
2. Buy into Undervalued Stock. To determine whether the company is undervalue, you could judge it current PE with historical PE or other market variable indicator such as P/NTA, P/CF, P/S and P/B etc.
3. Buy into Growth Stock. To determine whether the company is a growth stock, you can check whether the PEG ratio is low, CAGR is high, industry is a growing industry, having a good management etc.