This trip to Sinjel, if one viewed it from its original purpose, was undoubtedly a failure.
They acquired no information about the Hidden Land nor about the dimensional cube, and although they learned some secrets they had not known before, these secrets offered virtually no help with regard to Reiger and Liz's initial objectives.
Reiger had decided to undertake this journey for the sake of the dimensional cube and the Hidden Land's matters, but he ended up not achieving his goals, which was akin to the clues being completely cut off.
Next, if Reiger still wanted to explore the issues concerning the dimensional cube and the Hidden Land, he would need to rethink his strategies.
Yuri was asking Reiger what his plans were now since their expedition to Sinjel had failed.
She could see that the matters of the Hidden Land were very important to Liz and equally significant to Reiger; they were not unrelated to him.