add lecture2

Author: wendychaung

technology/images/Lecture2.jpg

@@ -0,0 +1,9 @@
+---
+layout: techDetail
+date: '2020-09-14'
+title: XDAG TECHNICAL FORUM（LECTURE 2）
+image: '/technology/images/Lecture2.jpg'
+---
+
+
+<iframe src="//player.bilibili.com/player.html?aid=975382543&bvid=BV1344y1h7ov&cid=407941094&page=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true" width="100%" height="500"> </iframe>