maven-3.9 & maven-4.0 download in china mainland from huawei cloud
Index of apache-local/maven/maven-3/3.9.0/binaries
https://repo.huaweicloud.com/apache/maven/maven-3/3.9.0/binaries/
Index of apache-local/maven/maven-4/4.0.0-alpha-4/binaries
https://repo.huaweicloud.com/apache/maven/maven-4/4.0.0-alpha-4/binaries/