The development of earth sciences and activity on frontiers of continent dynamics put forth a new challenge to the palaeogeography researchers, and mobilism palaeogeography maps should be compiled for prospecting of mineral deposits and study of the evolution of sedimentary crust as well as continental tectonics .

In order to give a reasonable interpretation on these new data and to adapt the view on Earth most closely to the epistemology of the materialistic dialectics, an im-portant problem for the structural geologists of China to face is that we should improv and cor-rect the knowledge about mobilism.

It is pointed that "Block Tectonics" is a practical application to China and it is the development of "Plate Tectonics" under the guidance of global tectonic ideology with activity theory as the connotation.

Then from the point of view of activity theory,the paper reveals the systematic research on the pr.

Mode of teaching network-based learning strategies guided by activity theory;

Constructions of the Activity Theory and Virtual Learning Community;

An Inquiry into Evolutionary Skeleton and Application of Activity Theory;

This paper investigates his statements and actions from 1927 to 1933, in which the researches are insufficient, to enriches the investigations on this duration.