The van, owned by retail shop Shuang You Communications, heads to a nearby village and parks in front of the town hall.

FORBES: Battle To The Top

"In general we think the rebound is on track but the rebound seems to be quite modest, " said Ding Shuang, an economist with Citi.

CNN: Growth in Chinese manufacturing slows

On the Boston University campus Wednesday morning, the president of the Chinese Students and Scholars Association, Shuang Guo, said that the group was planning a memorial service for Ms. Lu.

WSJ: China Mourns Boston Marathon Victim

"By using natural crystals for the first time, rather than artificial metamaterials, we have been able to scale up the size of the cloak and can hide larger objects, thousands of times bigger than the wavelength of the light, " said Shuang Zhang, the University of Birmingham physicist who led the research.

BBC: Invisibility cloaking benefits from crystal-clear idea