1. I am delighted to hear that you are planning to visit Shanghai this summer.2. It brings me joy to learn that you wish to come to Shanghai during the upcoming summer season.3. I am very glad to hear that you are interested in visiting Shanghai this summertime.4. The news that you want to come to Shanghai this summer pleases me greatly.5. I'm thrilled to know that you are considering a trip to Shanghai during the summer months.詳情