Thaum Lub Tsib Hlis, 22th, qhov kev ruaj ntseg qhia txog kev cuam tshuam ntawm kev tua hluav taws thiab yuam kev ua haujlwm kev cob qhia, txhawm rau txhawm rau txhim kho kev paub txog kev tua hluav taws thiab kev sib koom tes. Plaub caug tus neeg tiv thaiv kev nyab xeeb tau koom nrog qhov haujlwm no.