Merge pull request !1888 from TangQunzhang/master

Merge pull request !1860 from 王强/master

Merge pull request !1866 from liudingyan/master

Merge pull request !1881 from 王涛/revert-merge-1849-master

From: @zhou_chao1993
Reviewed-by: @xchu42,@wqtshg
Signed-off-by: @wqtshg

From: @yangyongqiang5033
Reviewed-by: @zhangxiaokun9,@wqtshg
Signed-off-by: @wqtshg

From: @HW_KK
Reviewed-by: @xchu42,@wqtshg
Signed-off-by: @wqtshg

From: @zhupuxu
Reviewed-by: 
Signed-off-by:

Signed-off-by: zhupuxu <zhupuxu@huawei.com>

From: @lichun30
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @zhangxiaokun9
Reviewed-by: @xchu42
Signed-off-by:

From: @dimitri_rose
Reviewed-by: @wqtshg,@ji_chen
Signed-off-by:

From: @zhao_zhixuan
Reviewed-by: 
Signed-off-by:

From: @jiming6
Reviewed-by: @wqtshg,@ji_chen
Signed-off-by: @ji_chen

From: @lianghuikang
Reviewed-by: 
Signed-off-by:

From: @dimitri_rose
Reviewed-by: 
Signed-off-by:

From: @wqtshg
Reviewed-by: @ji_chen,@xchu42
Signed-off-by: @ji_chen

From: @wqtshg
Reviewed-by: @ji_chen,@sheng-nan
Signed-off-by: @ji_chen