1. Looks like Pale-legged or Sakhalin Leaf Warbler (pale pink legs). These wouldn't be separable from this photo.
2. Agree Yellow-billed (=Chinese) Grosbeak.
4. Like Andrew suggested, I think this is an Azure-winged Magpie, with the photo rotated through 90 degrees.
5. Looks like Eastern Crowned Warbler to me. There seems to be a central crown stripe and the undertail coverts look very yellow.
3. This is an interesting bird. Brown Shrike would be by far the most likely species based on range. But the plumage tones (bright rufous upperparts, whitish underparts), relatively brown mask, pale lores and pale bill put me in mind of a Red-backed Shrike, which would be a very good record. I'm not sure whether some of these are due to photo artefacts, though. Do you have any more pictures of this bird?