When running push ads on RichPush, the type of bidding you choose can affect your results. CPC means you only pay when someone clicks, while CPM means you pay for every 1,000 views, even if no one clicks. If you're just starting and want to see which ad gets more attention, CPC might be safer since you only pay when people actually click. But if you already have a strong ad with a high click rate, CPM can sometimes bring better results because you pay less for more views. Some people use CPC to test and once they find a good creative, they switch to CPM to scale. It all depends on how your ad is performing. There’s no fixed rule, so it's good to try both and compare the cost and returns. What are your thoughts on this approach?