The black series has been quite lively these days, with iron ore, coking coal, coke, and rebar all hitting the daily limit-up collectively on the same day, which is indeed rare. Many people are asking whether this is a sign of a rebound in cyclical stocks. From the recent supply and demand situation and macro expectations, there is indeed some loosening. But the question is, how far will this level of correlation go? Is it a temporary correction or a trend reversal? It depends on whether the subsequent trading volume and capital attitude can keep up. If this rally can stabilize, it may significantly help in the valuation recovery of companies in the related industry chain upstream and downstream.