Makes me wonder what your stress level might be right now.
Back in the olden days, I had been drafted into the Army, my stress level was very high for a very long time. This was back in the Vietnam era.
Your description of the oriental letters appearing was pretty common for me, both in sleep and a daydream state. Other things were happening as well.
It was big time stress, melt down of epic proportions for me. They put me on downers and thought I might be epileptic.
What I was seeing was really a window of thoughts, conflicts all amplified by the anxiety, trap of what I was in and projected.
I look back on it now as entertainment. It even was when it was happening, but it sure could be unnerving at times.
There are some simple things that might be helping your dream states to be more livid. Something as simple as what you eat before you sleep.
If these continue to be disturbing, keep happening on a regualar pattern, I'd see a doc about my stress level before I'd go to the church.
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Just enjoy what you do, as best you can, and let the dog out once in a while.