At the beginning of managing the campaign for fashion products, we faced several challenges. Initially, we encountered a high cost per click (CPC), which impacted our budget efficiency. Additionally, our landing pages were not optimized for conversions, leading to lower-than-expected results. In Google Merchant Center, many of our products were disapproved or limited due to mismatched value issues in product prices and image pixel problems. Furthermore, seasonal demand fluctuations affected our return on ad spend (ROAS), making it difficult to achieve the expected ROAS in the account.