https://www.reuters.com/article/us-usa-china-huawei/huawei-cfo-back-in-court-as-canadian-said-to-be-detained-in-china-idUSKBN1OA0M4 >A former Canadian diplomat has been detained in China, two sources said on Tuesday, just hours before a top executive at Chinese telecoms giant Huawei Technologies Co [HWT.UL] returned to a packed Vancouver courtroom for a bail hearing that has angered Beijing.