Inclusion Criteria:

          1. Histopathologically confirmed advanced solid tumors

               1. For phase II CRC group only: Patients with histologically confirmed
                  microsatellite stable (detected by immunohistochemistry, PCR or NGS methods)
                  advanced colorectal cancer.

               2. For phase II NPC group only: Patients with histologically or cytologically
                  confirmed advanced NPC with prior PD1 antibody treatment progression.

               3. For phase II NSCLC group only: Patients with histologically confirmed or
                  cytologically confirmed advanced non-small cell lung cancer together with
                  wild-type EGFR/ALK/ROS1 (first or second-generation sequencing results are
                  allowed).

          2. Patients who have failed standard antitumor therapy.

          3. At least one evaluable lesion according to RECIST 1.1 criteria.

          4. Age greater than 18 years, both men and women.

          5. ECOG: 0 to 1.

          6. Expected survival ≥ 3 months.

          7. The function of vital organs meets the following criteria (no blood components and
             cell growth factors are allowed 2 weeks before the start of study treatment):

               1. Absolute neutrophil count (ANC) ≥ 1.5 × 10^9/L;

               2. Platelets ≥ 100 × 10^9/L;

               3. Hemoglobin ≥ 90 g/L;

               4. Serum albumin ≥ 30 g/L;

               5. Total bilirubin ≤ 1.5 x the upper limit of normal(ULN), ALT and AST ≤ 2.5 x ULN;
                  if there is liver metastasis, ALT and AST ≤ 5 x ULN;

               6. Serum creatinine ≤ 1.5 x ULN ; or if Serum creatinine >1.5 x UL, 24-hour
                  creatinine clearance ≥ 50 mL/min (calculated according to Cockcroft-Gault
                  formula);

          8. Patients with asymptomatic brain metastases (not requiring pharmacological control) or
             brain metastases that have been stable for more than 28 days after treatment.

          9. Patients must have recovered to Grade 1 or less from adverse reactions resulting from
             prior antineoplastic therapy (except alopecia and sensory neuropathy not exceeding
             Grade 2).

         10. Males, women of childbearing potential (postmenopausal women who must have been
             postmenopausal for at least 12 months to be considered of non-childbearing potential)
             and their partners voluntarily use contraception deemed effective by the investigator
             during treatment and for at least three months after the last dose of study drug.

         11. Able to understand and voluntarily sign a written informed consent form, which must be
             signed prior to the performance of any trial-specified study procedures.

         12. Patients must be voluntary and able to complete study procedures and follow-up
             examinations.

        Exclusion Criteria:

          1. Cytotoxic chemotherapy, radiation therapy, surgery (except minor surgery), anticancer
             therapy with hormone therapy (except hormone for hypothyroidism or estrogen
             replacement therapy (ERT)), or any clinical study treatment within 28 days prior to
             the first dose of study drug; or clinically significant tumor embolism or tumor lysis
             syndrome (TLS).

          2. Immunotherapy, biologic therapy or anti-TNFa therapy within 28 days or 5 half-lives
             (whichever is shorter) prior to receiving the first dose of study drug.

          3. Patients who have received targeted therapy within 28 days prior to first dose of
             study drug.

          4. Prior treatment with anti PD-1, anti PD-L1, or anti PD-L2 agents (Phase II CRC cohort
             only).

          5. Patients have an immunodeficiency diagnosis or are receiving chronic systemic steroid
             therapy (daily dose of more than 10 mg prednisone equivalent) or any form of
             immunosuppressive therapy 7 days prior to the first dose of trial treatment.

          6. Patients have any active autoimmune disease or a history of autoimmune disease (such
             as interstitial pneumonia, uveitis, enteritis, hepatitis, hypophysitis, vasculitis,
             myocarditis, nephritis, hyperthyroidism, decreased thyroid function (can be included
             if hormone replacement therapy is effective); patients with vitiligo or asthma that
             has been completely relieved in childhood and does not require any intervention after
             adulthood can be included, and patients with asthma requiring bronchodilators for
             medical intervention cannot be included.

          7. Patient has an active infection or unexplained fever > 38.5。C within 2 weeks prior to
             the first dose (subjects may be enrolled due to tumor generated fever as judged by the
             investigator).

          8. Any evidence of a past history of interstitial lung disease, drug-induced interstitial
             lung disease, radiation pneumonitis requiring steroids, or clinically active
             interstitial lung disease.

          9. Hepatic decompensation.

         10. Evidence of any severe or uncontrolled systemic disease; various chronic active
             infections such as hepatitis B (evidence of hepatitis activity such as HBV-DNA ≥ 104
             copies/mL or 2000 IU/mL), hepatitis C, and HIV.

         11. Any of the following cardiac criteria: Mean QTc> 470 msec at rest during screening;
             Any clinically important abnormality in rhythm, conduction, or morphology of the
             resting electrocardiogram (ECG) (e.g., complete left bundle branch block, third degree
             heart block, second degree heart block); Congenital long QT syndrome or family history
             of long QT syndrome.

         12. Uncontrolled hypertension (requiring 2 or more medications to control blood pressure);
             Unstable cardiac pain; Angina pectoris within 3 months of study entry; Congestive
             heart failure (NYHA class II or higher); Previous myocardial infarction (NSTEMI or
             STEMI) within 6 months of study entry; Serious cardiac arrhythmia requiring medical
             attention; Serious hepatic, renal, gastrointestinal, or metabolic disease.

         13. History of allergic reactions attributed to compounds of similar chemical or biologic
             composition to APG-1387 or toripalimab or their constituents.

         14. Have received a live vaccine within 28 days prior to the first dose of investigational
             product. Live vaccines include but are not limited to the following: measles, mumps,
             rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacille Calmette-Guérin
             vaccine (BCG) and typhoid. Injectable seasonal influenza vaccines are usually
             inactivated viral vaccines and are therefore allowed; however, intranasal influenza
             vaccines (e.g., FluMist) are live attenuated vaccines and are not allowed.

         15. Patients who have not sufficiently recovered after surgical treatment as judged by the
             investigator. Patients with major surgery within 28 days prior to the first dose of
             study drug and minor surgery within 7 days prior to the start of the study.

         16. Pregnant or lactating female patients.

         17. The subject has other factors that may cause the subject to be forced to terminate the
             study, such as suffering from other serious diseases (including mental illness)
             requiring concomitant treatment, severe abnormalities in laboratory tests, family or
             social factors, conditions that may affect the safety of the subject or the collection
             of trial data, etc.