Huang Zhijun is a calligrapher, but he is not from Gansu. His works may have artistic value and collection value, but whether they have collection value depends on personal views and market demand.
If you are interested in collecting calligraphy works, I suggest you study the relevant art market and collection evaluation, get to know more about Huang Zhijun's works, and decide whether they are valuable for collection by your own judgment. At the same time, it should be noted that the collectible market is risky and needs to carefully evaluate its financial situation and investment objectives.