passerby-b

P.186 and P187, Eighth Edition, June 2005, "The Birds of Hong Kong and South China" refer.
After reading the pages, I could not get an single idea of the ID of the Warbler below!!!
I guess it should be a Yellow-browed Warbler. But it was not that active on site.
I took the photo yesterday afternoon in LV.
Please ID for me.