Critically analyze the whole article in detail. ( cover all the article aspects)

discuss the purpose of the study ( in detail heading form)

discuss the Research methodology

and discuss the results of the article in detail. ( Describe the results of tables and hypothesis testing)

A brief and detailed answer is required:

Article titled: COVID19s Impact on Stock Prices Across Different SectorsAn Event Study Based on the Chinese Stock Market

authors: Pinglin He, Yulong Sun, Ying Zhang & Tao Li