1Pay attention to the treat-to-target in systemic Iupus erythematosusWANG Jia-kai, YANG Ping-tingCOMMENTARY737-7402Progress in diagnosis and treatment of lupus nephritisZHU Yan-tong, FENG Xue-bingSYMPOSIUM741-7443Systemic lupus erythematosus with secondary antiphospholipid syndromeQIAO Peng-yan, ZHANG Li-yunSYMPOSIUM745-7484Pulmonary damage associated with systemic lupus erythematosusYANG Ji-juan, CHI Shu-hongSYMPOSIUM749-752,7565Gastrointestinal injury in systemic lupus erythematosusYANG Hua-xiaSYMPOSIUM753-7566Interpretation of clinical practice guidelines for diagnosis and treatment of renal anemia in ChinaSUN Xue-fengGUIDELINE AND CONSENSUS785-7887Interpretation of the Guidelines to the diagnosis and treatment of pulmonary hypertension in China (2021) :risk stratification of pulmonary arterial hypertensionWANG Na, JI Ying-qunSPECIAL COLUMN OF HUNDRED YEARS OF THE PARTY SEEKING GOOD HEALTH FOR THE PEOPLE789-7938Effect of calcium channel blockers in idiopathic pulmonary arterial hypertension evaluated by cardiopulmonary exercise testingTANG Yi, ZHANG Min, LIU Jun-yu, LIU Zhi-hong, ZHONG Chang-qing, ZHANG Liang, HE Jin, TANG Ming-xiang, FU Qing-hua, YANG Jun, PAN Hong-wei, ZHANG Yi, ZHENG Zhao-fen, PENG Jian-qiangORIGINAL CONTRIBUTION794-7989Study on the effect of aspiration on the acute exacerbation of chronic obstructive pulmonary diseaseLIU Ni, LI Yin-huan, ZHENG Ze-guang, CAO Yan-fei, YANG Feng, WU Lu-lu, CHEN Ying-mei, SU Guan-sheng, HU Jie-ying, ZHONG Nan-shanORIGINAL CONTRIBUTION799-80310Comparison of the effects between high-flow nasal cannula oxygen and non-invasive positive pressure ventilation in critically ill patients with acute hypoxic respiratory failure during painless fiberoptic bronchoscopyYANG Fu-xun, LUO Xiao-xiu, WANG Lan, HUANG Xiao-bo, ZENG FanORIGINAL CONTRIBUTION804-80811Overview of standardized training assessment certification programme for clinical application and quality control of pulmonary function test in ChinaAN Jia-ying, YU Xin-xin, SHEN Bei-lan, LIANG Jian-ling, WU Zhong-ping, ZHONG Li-ping, LIU Wen-ting, ZHENG Jin-ping, XIE Yan-qing, GAO YiCOLUMN OF STANDARDIZED LUNG FUNCTION TRAINING821-824 