Second, Wechsler's DRT framework for person indexicals is inadequate to characterize the belief reports involving the first/second person pronoun in the embedded clauses, though it works well for single-clause sentences.
for instance, the single-clause sentence 'I am smart' uttered by Zhangsan can be characterized as follows: (20) speaker: Conceives (Zhangsan, < z ismart, z nself>, smart' ' ' '(Zhangsan)) the belief report with an embedded clause 'Lisi believes that I am smart' uttered by Zhangsan apparently can't be analyzed in the same way.