The annual line generally refers to the 250-day moving average, which is essentially a simple moving average, but its parameters have certain special significance. Because in addition to normal rest days and holidays in a year, all trading days add up to about 250 days.
The annual line represents the moving cost of all investors in all trading days in a year, and it is one of the most important reference lines in the moving average system.
Half-year antenna refers to 120 antenna. It is the sum of the closing points of the stock market in 120 trading days divided by 120. If the 5-day moving average represents the short-term trend of the market, then the 120 moving average represents the long-term trend of the market, which can usually be used as the basis for judging the boundary between "bull" and "bear".